20605607704 has 32 divisors (see below), whose sum is σ = 42188202000. Its totient is φ = 9357214720.

The previous prime is 20605607699. The next prime is 20605607723. The reversal of 20605607704 is 40770650602.

It is a super-2 number, since 2×20605607704² (a number of 21 digits) contains 22 as substring.

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, 19297 + ... + 203920.

Almost surely, 2^20605607704 is an apocalyptic number.

It is an amenable number.

20605607704 is an abundant number, since it is smaller than the sum of its proper divisors (21582594296).

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

20605607704 is a wasteful number, since it uses less digits than its factorization.

20605607704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224283 (or 224279 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 20605607704 in words is "twenty billion, six hundred five million, six hundred seven thousand, seven hundred four".