30647421657 has 32 divisors (see below), whose sum is σ = 45568690560. Its totient is φ = 20357472960.

The previous prime is 30647421643. The next prime is 30647421661. The reversal of 30647421657 is 75612474603.

It is not a de Polignac number, because 30647421657 - 2⁷ = 30647421529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30647421617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9939238 + ... + 9942320.

It is an arithmetic number, because the mean of its divisors is an integer number (1424021580).

Almost surely, 2^30647421657 is an apocalyptic number.

It is an amenable number.

30647421657 is a deficient number, since it is larger than the sum of its proper divisors (14921268903).

30647421657 is a wasteful number, since it uses less digits than its factorization.

30647421657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310 (or 4304 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 30647421657 in words is "thirty billion, six hundred forty-seven million, four hundred twenty-one thousand, six hundred fifty-seven".