20696516576 has 24 divisors (see below), whose sum is σ = 40859789040. Its totient is φ = 10319427328.

The previous prime is 20696516573. The next prime is 20696516597. The reversal of 20696516576 is 67561569602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20696516573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889301 + ... + 912276.

It is an arithmetic number, because the mean of its divisors is an integer number (1702491210).

Almost surely, 2^20696516576 is an apocalyptic number.

It is an amenable number.

20696516576 is a deficient number, since it is larger than the sum of its proper divisors (20163272464).

20696516576 is a wasteful number, since it uses less digits than its factorization.

20696516576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801946 (or 1801938 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 20696516576 in words is "twenty billion, six hundred ninety-six million, five hundred sixteen thousand, five hundred seventy-six".