68669491265 has 16 divisors (see below), whose sum is σ = 87395763456. Its totient is φ = 51685656000.

The previous prime is 68669491237. The next prime is 68669491271. The reversal of 68669491265 is 56219496686.

It is a de Polignac number, because none of the positive numbers 2^k-68669491265 is a prime.

It is a super-2 number, since 2×68669491265² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68669491198 and 68669491207.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4887461 + ... + 4901490.

It is an arithmetic number, because the mean of its divisors is an integer number (5462235216).

Almost surely, 2^68669491265 is an apocalyptic number.

It is an amenable number.

68669491265 is a deficient number, since it is larger than the sum of its proper divisors (18726272191).

68669491265 is a wasteful number, since it uses less digits than its factorization.

68669491265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9789040.

The product of its digits is 33592320, while the sum is 62.

The spelling of 68669491265 in words is "sixty-eight billion, six hundred sixty-nine million, four hundred ninety-one thousand, two hundred sixty-five".