30645905372 has 48 divisors (see below), whose sum is σ = 59969226240. Its totient is φ = 13617891072.

The previous prime is 30645905371. The next prime is 30645905399. The reversal of 30645905372 is 27350954603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30645905371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358013 + ... + 435275.

It is an arithmetic number, because the mean of its divisors is an integer number (1249358880).

Almost surely, 2^30645905372 is an apocalyptic number.

It is an amenable number.

30645905372 is a deficient number, since it is larger than the sum of its proper divisors (29323320868).

30645905372 is a wasteful number, since it uses less digits than its factorization.

30645905372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77610 (or 77608 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 30645905372 in words is "thirty billion, six hundred forty-five million, nine hundred five thousand, three hundred seventy-two".