30172127656 has 16 divisors (see below), whose sum is σ = 61715715840. Its totient is φ = 13714603440.

The previous prime is 30172127647. The next prime is 30172127701. The reversal of 30172127656 is 65672127103.

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, 171432456 + ... + 171432631.

It is an arithmetic number, because the mean of its divisors is an integer number (3857232240).

Almost surely, 2^30172127656 is an apocalyptic number.

It is an amenable number.

30172127656 is an abundant number, since it is smaller than the sum of its proper divisors (31543588184).

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

30172127656 is a wasteful number, since it uses less digits than its factorization.

30172127656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342865104 (or 342865100 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 30172127656 in words is "thirty billion, one hundred seventy-two million, one hundred twenty-seven thousand, six hundred fifty-six".