30559668643 has 12 divisors (see below), whose sum is σ = 35557129872. Its totient is φ = 26188013040.

The previous prime is 30559668637. The next prime is 30559668661. The reversal of 30559668643 is 34686695503.

It is not a de Polignac number, because 30559668643 - 2²¹ = 30557571491 is a prime.

It is a super-2 number, since 2×30559668643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30559668943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152298 + ... + 290368.

It is an arithmetic number, because the mean of its divisors is an integer number (2963094156).

Almost surely, 2^30559668643 is an apocalyptic number.

30559668643 is a deficient number, since it is larger than the sum of its proper divisors (4997461229).

30559668643 is a wasteful number, since it uses less digits than its factorization.

30559668643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142602 (or 142595 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 55.

The spelling of 30559668643 in words is "thirty billion, five hundred fifty-nine million, six hundred sixty-eight thousand, six hundred forty-three".