68670815502 has 16 divisors (see below), whose sum is σ = 137353434192. Its totient is φ = 22888304640.

The previous prime is 68670815483. The next prime is 68670815503. The reversal of 68670815502 is 20551807686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68670815503) 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, 415249 + ... + 556572.

It is an arithmetic number, because the mean of its divisors is an integer number (8584589637).

Almost surely, 2^68670815502 is an apocalyptic number.

68670815502 is an abundant number, since it is smaller than the sum of its proper divisors (68682618690).

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

68670815502 is a wasteful number, since it uses less digits than its factorization.

68670815502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983603.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 68670815502 in words is "sixty-eight billion, six hundred seventy million, eight hundred fifteen thousand, five hundred two".