30251146992 has 80 divisors (see below), whose sum is σ = 86211267840. Its totient is φ = 9064000000.

The previous prime is 30251146967. The next prime is 30251146993. The reversal of 30251146992 is 29964115203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30251146993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274884 + ... + 368867.

It is an arithmetic number, because the mean of its divisors is an integer number (1077640848).

Almost surely, 2^30251146992 is an apocalyptic number.

It is an amenable number.

30251146992 is an abundant number, since it is smaller than the sum of its proper divisors (55960120848).

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

30251146992 is a wasteful number, since it uses less digits than its factorization.

30251146992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643862 (or 643856 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 30251146992 in words is "thirty billion, two hundred fifty-one million, one hundred forty-six thousand, nine hundred ninety-two".