20155616452 has 12 divisors (see below), whose sum is σ = 35274104320. Its totient is φ = 10077300936.

The previous prime is 20155616447. The next prime is 20155616477. The reversal of 20155616452 is 25461655102.

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, 29052 + ... + 202867.

Almost surely, 2^20155616452 is an apocalyptic number.

It is an amenable number.

20155616452 is a deficient number, since it is larger than the sum of its proper divisors (15118487868).

20155616452 is a wasteful number, since it uses less digits than its factorization.

20155616452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253650 (or 253648 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 20155616452 in words is "twenty billion, one hundred fifty-five million, six hundred sixteen thousand, four hundred fifty-two".