30645321874 has 16 divisors (see below), whose sum is σ = 46126473120. Its totient is φ = 15269870880.

The previous prime is 30645321859. The next prime is 30645321899. The reversal of 30645321874 is 47812354603.

It is a super-2 number, since 2×30645321874² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30645321874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1798117 + ... + 1815079.

It is an arithmetic number, because the mean of its divisors is an integer number (2882904570).

Almost surely, 2^30645321874 is an apocalyptic number.

30645321874 is a deficient number, since it is larger than the sum of its proper divisors (15481151246).

30645321874 is a wasteful number, since it uses less digits than its factorization.

30645321874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20025.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 30645321874 in words is "thirty billion, six hundred forty-five million, three hundred twenty-one thousand, eight hundred seventy-four".