20614907136 has 72 divisors (see below), whose sum is σ = 55901028960. Its totient is φ = 6741968896.

The previous prime is 20614907129. The next prime is 20614907177. The reversal of 20614907136 is 63170941602.

It is a junction number, because it is equal to n+sod(n) for n = 20614907094 and 20614907103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212526 + ... + 293933.

It is an arithmetic number, because the mean of its divisors is an integer number (776403180).

Almost surely, 2^20614907136 is an apocalyptic number.

It is an amenable number.

20614907136 is an abundant number, since it is smaller than the sum of its proper divisors (35286121824).

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

20614907136 is an equidigital number, since it uses as much as digits as its factorization.

20614907136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506531 (or 506517 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 20614907136 in words is "twenty billion, six hundred fourteen million, nine hundred seven thousand, one hundred thirty-six".