20695902400 has 42 divisors (see below), whose sum is σ = 50924858780. Its totient is φ = 8278360320.

The previous prime is 20695902379. The next prime is 20695902419. The reversal of 20695902400 is 420959602.

It is a self number, because there is not a number n which added to its sum of digits gives 20695902400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6465870 + ... + 6469069.

Almost surely, 2^20695902400 is an apocalyptic number.

20695902400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20695902400 is an abundant number, since it is smaller than the sum of its proper divisors (30228956380).

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

20695902400 is a wasteful number, since it uses less digits than its factorization.

20695902400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934961 (or 12934946 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 20695902400 in words is "twenty billion, six hundred ninety-five million, nine hundred two thousand, four hundred".