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68716075865 = 526352255571
BaseRepresentation
bin111111111111110011…
…000001101101011001
320120100221102100001212
4333333303001231121
52111212303411430
651322343552505
74651564002413
oct777763015531
9216327370055
1068716075865
1127162484948
1211398a5b735
13663144a928
14347c2bb9b3
151bc2a48b95
hexfffcc1b59

68716075865 has 8 divisors (see below), whose sum is σ = 82772826048. Its totient is φ = 54763837360.

The previous prime is 68716075859. The next prime is 68716075877. The reversal of 68716075865 is 56857061786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68716075865 - 212 = 68716071769 is a prime.

It is a Duffinian 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, 26126471 + ... + 26129100.

It is an arithmetic number, because the mean of its divisors is an integer number (10346603256).

Almost surely, 268716075865 is an apocalyptic number.

It is an amenable number.

68716075865 is a deficient number, since it is larger than the sum of its proper divisors (14056750183).

68716075865 is a wasteful number, since it uses less digits than its factorization.

68716075865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52255839.

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 68716075865 in words is "sixty-eight billion, seven hundred sixteen million, seventy-five thousand, eight hundred sixty-five".

Divisors: 1 5 263 1315 52255571 261277855 13743215173 68716075865