68607890856 has 48 divisors (see below), whose sum is σ = 195592675200. Its totient is φ = 21665649312.

The previous prime is 68607890789. The next prime is 68607890863. The reversal of 68607890856 is 65809870686.

It is a junction number, because it is equal to n+sod(n) for n = 68607890793 and 68607890802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25074616 + ... + 25077351.

It is an arithmetic number, because the mean of its divisors is an integer number (4074847400).

Almost surely, 2^68607890856 is an apocalyptic number.

It is an amenable number.

68607890856 is an abundant number, since it is smaller than the sum of its proper divisors (126984784344).

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

68607890856 is a wasteful number, since it uses less digits than its factorization.

68607890856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50151998 (or 50151991 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 68607890856 in words is "sixty-eight billion, six hundred seven million, eight hundred ninety thousand, eight hundred fifty-six".