68702989192 has 16 divisors (see below), whose sum is σ = 128833695900. Its totient is φ = 34347336960.

The previous prime is 68702989099. The next prime is 68702989193. The reversal of 68702989192 is 29198920786.

It can be written as a sum of positive squares in 2 ways, for example, as 67416045316 + 1286943876 = 259646^2 + 35874^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68702989192.

It is not an unprimeable number, because it can be changed into a prime (68702989193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448909 + ... + 582172.

Almost surely, 2^68702989192 is an apocalyptic number.

It is an amenable number.

68702989192 is a deficient number, since it is larger than the sum of its proper divisors (60130706708).

68702989192 is a wasteful number, since it uses less digits than its factorization.

68702989192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039416 (or 1039412 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 68702989192 in words is "sixty-eight billion, seven hundred two million, nine hundred eighty-nine thousand, one hundred ninety-two".