20502535516 has 6 divisors (see below), whose sum is σ = 35879437160. Its totient is φ = 10251267756.

The previous prime is 20502535511. The next prime is 20502535519. The reversal of 20502535516 is 61553520502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502535511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2562816936 + ... + 2562816943.

Almost surely, 2^20502535516 is an apocalyptic number.

It is an amenable number.

20502535516 is a deficient number, since it is larger than the sum of its proper divisors (15376901644).

20502535516 is a wasteful number, since it uses less digits than its factorization.

20502535516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125633883 (or 5125633881 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 20502535516 in words is "twenty billion, five hundred two million, five hundred thirty-five thousand, five hundred sixteen".