20516111652 has 12 divisors (see below), whose sum is σ = 47870927216. Its totient is φ = 6838703880.

The previous prime is 20516111617. The next prime is 20516111689. The reversal of 20516111652 is 25611161502.

It is a tau number, because it is divible by the number of its divisors (12).

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, 854837974 + ... + 854837997.

Almost surely, 2^20516111652 is an apocalyptic number.

It is an amenable number.

20516111652 is an abundant number, since it is smaller than the sum of its proper divisors (27354815564).

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

20516111652 is a wasteful number, since it uses less digits than its factorization.

20516111652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709675978 (or 1709675976 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 20516111652 in words is "twenty billion, five hundred sixteen million, one hundred eleven thousand, six hundred fifty-two".