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68819444375 = 541110010101
BaseRepresentation
bin100000000010111110…
…1010110001010010111
320120122010221000000012
41000011331112022113
52111420234210000
651340515310435
74654260424343
oct1000575261227
9216563830005
1068819444375
1127205867170
12114075ab41b
1366499a0726
14348bd08623
151bcbb66735
hex1005f56297

68819444375 has 20 divisors (see below), whose sum is σ = 93814675944. Its totient is φ = 50050500000.

The previous prime is 68819444347. The next prime is 68819444377. The reversal of 68819444375 is 57344491886.

It is not a de Polignac number, because 68819444375 - 226 = 68752335511 is a prime.

It is a super-2 number, since 2×688194443752 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68819444377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4998176 + ... + 5011925.

Almost surely, 268819444375 is an apocalyptic number.

68819444375 is a deficient number, since it is larger than the sum of its proper divisors (24995231569).

68819444375 is a wasteful number, since it uses less digits than its factorization.

68819444375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010132 (or 10010117 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 59.

The spelling of 68819444375 in words is "sixty-eight billion, eight hundred nineteen million, four hundred forty-four thousand, three hundred seventy-five".

Divisors: 1 5 11 25 55 125 275 625 1375 6875 10010101 50050505 110111111 250252525 550555555 1251262625 2752777775 6256313125 13763888875 68819444375