30894715195840 has 56 divisors (see below), whose sum is σ = 73689240431232. Its totient is φ = 12337527045120.

The previous prime is 30894715195823. The next prime is 30894715195873. The reversal of 30894715195840 is 4859151749803.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79332931 + ... + 79721410.

Almost surely, 2^{30894715195840} is an apocalyptic number.

It is an amenable number.

30894715195840 is an abundant number, since it is smaller than the sum of its proper divisors (42794525235392).

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

30894715195840 is a wasteful number, since it uses less digits than its factorization.

30894715195840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159054965 (or 159054955 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 64.

It can be divided in two parts, 30894715 and 195840, that added together give a triangular number (31090555 = T₇₈₈₅).

The spelling of 30894715195840 in words is "thirty trillion, eight hundred ninety-four billion, seven hundred fifteen million, one hundred ninety-five thousand, eight hundred forty".