877642617920 has 56 divisors (see below), whose sum is σ = 2138488528704. Its totient is φ = 342892924416.

The previous prime is 877642617913. The next prime is 877642617923. The reversal of 877642617920 is 29716246778.

It is a super-2 number, since 2×877642617920² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 877642617920.

It is not an unprimeable number, because it can be changed into a prime (877642617923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31877324 + ... + 31904843.

Almost surely, 2^877642617920 is an apocalyptic number.

877642617920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

877642617920 is an abundant number, since it is smaller than the sum of its proper divisors (1260845910784).

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

877642617920 is a wasteful number, since it uses less digits than its factorization.

877642617920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63782227 (or 63782217 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 877642617920 in words is "eight hundred seventy-seven billion, six hundred forty-two million, six hundred seventeen thousand, nine hundred twenty".