20694800724 has 24 divisors (see below), whose sum is σ = 52002320160. Its totient is φ = 6367630944.

The previous prime is 20694800617. The next prime is 20694800773. The reversal of 20694800724 is 42700849602.

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, 66329334 + ... + 66329645.

It is an arithmetic number, because the mean of its divisors is an integer number (2166763340).

Almost surely, 2^20694800724 is an apocalyptic number.

It is an amenable number.

20694800724 is an abundant number, since it is smaller than the sum of its proper divisors (31307519436).

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

20694800724 is a wasteful number, since it uses less digits than its factorization.

20694800724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132658999 (or 132658997 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 20694800724 in words is "twenty billion, six hundred ninety-four million, eight hundred thousand, seven hundred twenty-four".