20696751888 has 20 divisors (see below), whose sum is σ = 53466609168. Its totient is φ = 6898917280.

The previous prime is 20696751839. The next prime is 20696751919. The reversal of 20696751888 is 88815769602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215591118 + ... + 215591213.

Almost surely, 2^20696751888 is an apocalyptic number.

It is an amenable number.

20696751888 is an abundant number, since it is smaller than the sum of its proper divisors (32769857280).

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

20696751888 is a wasteful number, since it uses less digits than its factorization.

20696751888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431182342 (or 431182336 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 20696751888 in words is "twenty billion, six hundred ninety-six million, seven hundred fifty-one thousand, eight hundred eighty-eight".