20878935755004 has 24 divisors (see below), whose sum is σ = 54130574179920. Its totient is φ = 6959645251632.

The previous prime is 20878935754991. The next prime is 20878935755023. The reversal of 20878935755004 is 40055753987802.

20878935755004 is a `hidden beast` number, since 2 + 0 + 8 + 7 + 8 + 9 + 3 + 575 + 50 + 0 + 4 = 666.

It is a super-2 number, since 2×20878935755004² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96661739499 + ... + 96661739714.

It is an arithmetic number, because the mean of its divisors is an integer number (2255440590830).

Almost surely, 2^{20878935755004} is an apocalyptic number.

It is an amenable number.

20878935755004 is an abundant number, since it is smaller than the sum of its proper divisors (33251638424916).

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

20878935755004 is a wasteful number, since it uses less digits than its factorization.

20878935755004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193323479226 (or 193323479218 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 63.

The spelling of 20878935755004 in words is "twenty trillion, eight hundred seventy-eight billion, nine hundred thirty-five million, seven hundred fifty-five thousand, four".