30799662640 has 20 divisors (see below), whose sum is σ = 71609215824. Its totient is φ = 12319865024.

The previous prime is 30799662629. The next prime is 30799662661. The reversal of 30799662640 is 4626699703.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192497812 + ... + 192497971.

Almost surely, 2^30799662640 is an apocalyptic number.

It is an amenable number.

30799662640 is an abundant number, since it is smaller than the sum of its proper divisors (40809553184).

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

30799662640 is a wasteful number, since it uses less digits than its factorization.

30799662640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384995796 (or 384995790 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 30799662640 in words is "thirty billion, seven hundred ninety-nine million, six hundred sixty-two thousand, six hundred forty".