20696890176 has 112 divisors (see below), whose sum is σ = 64424234880. Its totient is φ = 6493132800.

The previous prime is 20696890169. The next prime is 20696890177. The reversal of 20696890176 is 67109869602.

It is a super-2 number, since 2×20696890176² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20696890177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322900 + ... + 381651.

Almost surely, 2^20696890176 is an apocalyptic number.

It is an amenable number.

20696890176 is an abundant number, since it is smaller than the sum of its proper divisors (43727344704).

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

20696890176 is a wasteful number, since it uses less digits than its factorization.

20696890176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704589 (or 704573 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 20696890176 in words is "twenty billion, six hundred ninety-six million, eight hundred ninety thousand, one hundred seventy-six".