30528816685 has 16 divisors (see below), whose sum is σ = 37706018112. Its totient is φ = 23714409600.

The previous prime is 30528816679. The next prime is 30528816707. The reversal of 30528816685 is 58661882503.

It is not a de Polignac number, because 30528816685 - 2⁵ = 30528816653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309639 + ... + 396148.

It is an arithmetic number, because the mean of its divisors is an integer number (2356626132).

Almost surely, 2^30528816685 is an apocalyptic number.

It is an amenable number.

30528816685 is a deficient number, since it is larger than the sum of its proper divisors (7177201427).

30528816685 is a wasteful number, since it uses less digits than its factorization.

30528816685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706044.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 30528816685 in words is "thirty billion, five hundred twenty-eight million, eight hundred sixteen thousand, six hundred eighty-five".