20711418684 has 48 divisors (see below), whose sum is σ = 53506862976. Its totient is φ = 6182510400.

The previous prime is 20711418647. The next prime is 20711418781. The reversal of 20711418684 is 48681411702.

It is a congruent number.

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, 1162087 + ... + 1179774.

It is an arithmetic number, because the mean of its divisors is an integer number (1114726312).

Almost surely, 2^20711418684 is an apocalyptic number.

It is an amenable number.

20711418684 is an abundant number, since it is smaller than the sum of its proper divisors (32795444292).

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

20711418684 is a wasteful number, since it uses less digits than its factorization.

20711418684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341946 (or 2341944 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 20711418684 in words is "twenty billion, seven hundred eleven million, four hundred eighteen thousand, six hundred eighty-four".