20876806377 has 192 divisors, whose sum is σ = 39736934400. Its totient is φ = 10757940480.

The previous prime is 20876806369. The next prime is 20876806381. The reversal of 20876806377 is 77360867802.

20876806377 is a `hidden beast` number, since 208 + 7 + 68 + 0 + 6 + 377 = 666.

It is not a de Polignac number, because 20876806377 - 2³ = 20876806369 is a prime.

It is a super-2 number, since 2×20876806377² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20876806367) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 56884848 + ... + 56885214.

It is an arithmetic number, because the mean of its divisors is an integer number (206963200).

Almost surely, 2^20876806377 is an apocalyptic number.

20876806377 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20876806377 is a deficient number, since it is larger than the sum of its proper divisors (18860128023).

20876806377 is a wasteful number, since it uses less digits than its factorization.

20876806377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 20876806377 in words is "twenty billion, eight hundred seventy-six million, eight hundred six thousand, three hundred seventy-seven".