20118940902 has 48 divisors (see below), whose sum is σ = 44173846080. Its totient is φ = 6616771200.

The previous prime is 20118940889. The next prime is 20118940939. The reversal of 20118940902 is 20904981102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2443152 + ... + 2451372.

It is an arithmetic number, because the mean of its divisors is an integer number (920288460).

Almost surely, 2^20118940902 is an apocalyptic number.

20118940902 is an abundant number, since it is smaller than the sum of its proper divisors (24054905178).

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

20118940902 is a wasteful number, since it uses less digits than its factorization.

20118940902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10029 (or 10026 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 20118940902 in words is "twenty billion, one hundred eighteen million, nine hundred forty thousand, nine hundred two".