65142979900 has 18 divisors (see below), whose sum is σ = 141360266600. Its totient is φ = 26057191920.

The previous prime is 65142979897. The next prime is 65142979921. The reversal of 65142979900 is 997924156.

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, 325714800 + ... + 325714999.

Almost surely, 2^65142979900 is an apocalyptic number.

It is an amenable number.

65142979900 is an abundant number, since it is smaller than the sum of its proper divisors (76217286700).

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

65142979900 is a wasteful number, since it uses less digits than its factorization.

65142979900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651429813 (or 651429806 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 65142979900 in words is "sixty-five billion, one hundred forty-two million, nine hundred seventy-nine thousand, nine hundred".