30998593872 has 60 divisors (see below), whose sum is σ = 86778936244. Its totient is φ = 10329776640.

The previous prime is 30998593853. The next prime is 30998593877. The reversal of 30998593872 is 27839589903.

30998593872 is a `hidden beast` number, since 30 + 9 + 9 + 8 + 593 + 8 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17735846976 + 13262746896 = 133176^2 + 115164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30998593877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479508 + ... + 540300.

Almost surely, 2^30998593872 is an apocalyptic number.

It is an amenable number.

30998593872 is an abundant number, since it is smaller than the sum of its proper divisors (55780342372).

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

30998593872 is a wasteful number, since it uses less digits than its factorization.

30998593872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64348 (or 64339 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 30998593872 in words is "thirty billion, nine hundred ninety-eight million, five hundred ninety-three thousand, eight hundred seventy-two".