30972529688 has 8 divisors (see below), whose sum is σ = 58073493180. Its totient is φ = 15486264840.

The previous prime is 30972529681. The next prime is 30972529699. The reversal of 30972529688 is 88692527903.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30972529681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935783098 + ... + 1935783113.

Almost surely, 2^30972529688 is an apocalyptic number.

It is an amenable number.

30972529688 is a deficient number, since it is larger than the sum of its proper divisors (27100963492).

30972529688 is a wasteful number, since it uses less digits than its factorization.

30972529688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871566217 (or 3871566213 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 30972529688 in words is "thirty billion, nine hundred seventy-two million, five hundred twenty-nine thousand, six hundred eighty-eight".