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20231438873568 = 2531316211088841
BaseRepresentation
bin1001001100110011111111…
…01110100011001111100000
32122122002212202112102222220
410212121333232203033200
510122432441322423233
6111010110020231040
74155446626004256
oct446317756431740
978562782472886
1020231438873568
1164a01178a227a
122328ba3b3b480
13b39a7cb07680
144dd2c78d85d6
152513ed406eb3
hex12667fba33e0

20231438873568 has 48 divisors (see below), whose sum is σ = 57192721434576. Its totient is φ = 6225058114560.

The previous prime is 20231438873531. The next prime is 20231438873623. The reversal of 20231438873568 is 86537883413202.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×202314388735682 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8105543173 + ... + 8105545668.

It is an arithmetic number, because the mean of its divisors is an integer number (1191515029887).

Almost surely, 220231438873568 is an apocalyptic number.

It is an amenable number.

20231438873568 is an abundant number, since it is smaller than the sum of its proper divisors (36961282561008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231438873568 is a wasteful number, since it uses less digits than its factorization.

20231438873568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16211088867 (or 16211088859 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 60.

The spelling of 20231438873568 in words is "twenty trillion, two hundred thirty-one billion, four hundred thirty-eight million, eight hundred seventy-three thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 208 312 416 624 1248 16211088841 32422177682 48633266523 64844355364 97266533046 129688710728 194533066092 210744154933 259377421456 389066132184 421488309866 518754842912 632232464799 778132264368 842976619732 1264464929598 1556264528736 1685953239464 2528929859196 3371906478928 5057859718392 6743812957856 10115719436784 20231438873568