20693380920 has 64 divisors (see below), whose sum is σ = 62427024000. Its totient is φ = 5487401088.

The previous prime is 20693380919. The next prime is 20693380921. The reversal of 20693380920 is 2908339602.

It is an interprime number because it is at equal distance from previous prime (20693380919) and next prime (20693380921).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20693380921) 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, 460210 + ... + 503169.

It is an arithmetic number, because the mean of its divisors is an integer number (975422250).

Almost surely, 2^20693380920 is an apocalyptic number.

20693380920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20693380920 is an abundant number, since it is smaller than the sum of its proper divisors (41733643080).

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

20693380920 is a wasteful number, since it uses less digits than its factorization.

20693380920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963572 (or 963568 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 20693380920 in words is "twenty billion, six hundred ninety-three million, three hundred eighty thousand, nine hundred twenty".