20116257636 has 48 divisors (see below), whose sum is σ = 47111348480. Its totient is φ = 6680689920.

The previous prime is 20116257613. The next prime is 20116257649. The reversal of 20116257636 is 63675261102.

It is a junction number, because it is equal to n+sod(n) for n = 20116257594 and 20116257603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4891221 + ... + 4895331.

Almost surely, 2^20116257636 is an apocalyptic number.

It is an amenable number.

20116257636 is an abundant number, since it is smaller than the sum of its proper divisors (26995090844).

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

20116257636 is a wasteful number, since it uses less digits than its factorization.

20116257636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524 (or 5522 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 20116257636 in words is "twenty billion, one hundred sixteen million, two hundred fifty-seven thousand, six hundred thirty-six".