20236242556 has 12 divisors (see below), whose sum is σ = 36236992792. Its totient is φ = 9882816048.

The previous prime is 20236242511. The next prime is 20236242563. The reversal of 20236242556 is 65524263202.

It is a congruent number.

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, 58826115 + ... + 58826458.

Almost surely, 2^20236242556 is an apocalyptic number.

It is an amenable number.

20236242556 is a deficient number, since it is larger than the sum of its proper divisors (16000750236).

20236242556 is a wasteful number, since it uses less digits than its factorization.

20236242556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117652620 (or 117652618 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 20236242556 in words is "twenty billion, two hundred thirty-six million, two hundred forty-two thousand, five hundred fifty-six".