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420975764888 = 23713995373427
BaseRepresentation
bin1100010000001000001…
…11000110010110011000
31111020121112011122000212
412020010013012112120
523344124243434023
6521221003350252
742262112650340
oct6100407062630
91436545148025
10420975764888
11152597931a88
1269707b22388
133090c219143
1416537cc7d20
15ae3d159e78
hex62041c6598

420975764888 has 32 divisors (see below), whose sum is σ = 902735904000. Its totient is φ = 180289189152.

The previous prime is 420975764887. The next prime is 420975764893. The reversal of 420975764888 is 888467579024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420975764887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2608370 + ... + 2765057.

It is an arithmetic number, because the mean of its divisors is an integer number (28210497000).

Almost surely, 2420975764888 is an apocalyptic number.

It is an amenable number.

420975764888 is an abundant number, since it is smaller than the sum of its proper divisors (481760139112).

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

420975764888 is a wasteful number, since it uses less digits than its factorization.

420975764888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374839 (or 5374835 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 68.

The spelling of 420975764888 in words is "four hundred twenty billion, nine hundred seventy-five million, seven hundred sixty-four thousand, eight hundred eighty-eight".

Divisors: 1 2 4 7 8 14 28 56 1399 2798 5596 9793 11192 19586 39172 78344 5373427 10746854 21493708 37613989 42987416 75227978 150455956 300911912 7517424373 15034848746 30069697492 52621970611 60139394984 105243941222 210487882444 420975764888