68615265512 has 32 divisors (see below), whose sum is σ = 130719070080. Its totient is φ = 33759031680.

The previous prime is 68615265469. The next prime is 68615265517. The reversal of 68615265512 is 21556251686.

It is a super-2 number, since 2×68615265512² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68615265517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115403 + ... + 388005.

It is an arithmetic number, because the mean of its divisors is an integer number (4084970940).

Almost surely, 2^68615265512 is an apocalyptic number.

It is an amenable number.

68615265512 is a deficient number, since it is larger than the sum of its proper divisors (62103804568).

68615265512 is a wasteful number, since it uses less digits than its factorization.

68615265512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273113 (or 273109 counting only the distinct ones).

The product of its digits is 864000, while the sum is 47.

The spelling of 68615265512 in words is "sixty-eight billion, six hundred fifteen million, two hundred sixty-five thousand, five hundred twelve".