30405442688 has 32 divisors (see below), whose sum is σ = 61009158000. Its totient is φ = 15093340416.

The previous prime is 30405442679. The next prime is 30405442693. The reversal of 30405442688 is 88624450403.

It is a tau number, because it is divible by the number of its divisors (32).

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, 836678 + ... + 872261.

Almost surely, 2^30405442688 is an apocalyptic number.

It is an amenable number.

30405442688 is an abundant number, since it is smaller than the sum of its proper divisors (30603715312).

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

30405442688 is a wasteful number, since it uses less digits than its factorization.

30405442688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709092 (or 1709080 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 44.

The spelling of 30405442688 in words is "thirty billion, four hundred five million, four hundred forty-two thousand, six hundred eighty-eight".