68156837670 has 32 divisors (see below), whose sum is σ = 163597667328. Its totient is φ = 18172794848.

The previous prime is 68156837669. The next prime is 68156837681. The reversal of 68156837670 is 7673865186.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68156837670.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93547 + ... + 380873.

It is an arithmetic number, because the mean of its divisors is an integer number (5112427104).

Almost surely, 2^68156837670 is an apocalyptic number.

68156837670 is an abundant number, since it is smaller than the sum of its proper divisors (95440829658).

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

68156837670 is a wasteful number, since it uses less digits than its factorization.

68156837670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295244.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 68156837670 in words is "sixty-eight billion, one hundred fifty-six million, eight hundred thirty-seven thousand, six hundred seventy".