20207717572 has 24 divisors (see below), whose sum is σ = 40496456000. Its totient is φ = 8643088800.

The previous prime is 20207717561. The next prime is 20207717581. The reversal of 20207717572 is 27571770202.

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, 709179 + ... + 737122.

Almost surely, 2^20207717572 is an apocalyptic number.

It is an amenable number.

20207717572 is an abundant number, since it is smaller than the sum of its proper divisors (20288738428).

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

20207717572 is a wasteful number, since it uses less digits than its factorization.

20207717572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446811 (or 1446809 counting only the distinct ones).

The product of its (nonzero) digits is 96040, while the sum is 40.

The spelling of 20207717572 in words is "twenty billion, two hundred seven million, seven hundred seventeen thousand, five hundred seventy-two".