68697982900 has 18 divisors (see below), whose sum is σ = 149074623110. Its totient is φ = 27479193120.

The previous prime is 68697982877. The next prime is 68697982939. The reversal of 68697982900 is 928979686.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9398914704 + 59299068196 = 96948^2 + 243514^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 343489815 + ... + 343490014.

Almost surely, 2^68697982900 is an apocalyptic number.

It is an amenable number.

68697982900 is an abundant number, since it is smaller than the sum of its proper divisors (80376640210).

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

68697982900 is a wasteful number, since it uses less digits than its factorization.

68697982900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686979843 (or 686979836 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 64.

The spelling of 68697982900 in words is "sixty-eight billion, six hundred ninety-seven million, nine hundred eighty-two thousand, nine hundred".