20877994944504 has 96 divisors (see below), whose sum is σ = 57848415861600. Its totient is φ = 6800593121280.

The previous prime is 20877994944491. The next prime is 20877994944517. The reversal of 20877994944504 is 40544949977802.

20877994944504 is a `hidden beast` number, since 2 + 0 + 8 + 7 + 7 + 99 + 494 + 45 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (20877994944491) and next prime (20877994944517).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17493649 + ... + 18648960.

It is an arithmetic number, because the mean of its divisors is an integer number (602587665225).

Almost surely, 2^{20877994944504} is an apocalyptic number.

20877994944504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20877994944504 is an abundant number, since it is smaller than the sum of its proper divisors (36970420917096).

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

20877994944504 is a wasteful number, since it uses less digits than its factorization.

20877994944504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36142805 (or 36142798 counting only the distinct ones).

The product of its (nonzero) digits is 731566080, while the sum is 72.

The spelling of 20877994944504 in words is "twenty trillion, eight hundred seventy-seven billion, nine hundred ninety-four million, nine hundred forty-four thousand, five hundred four".