877994978620 has 24 divisors (see below), whose sum is σ = 1843809002784. Its totient is φ = 351194268096.

The previous prime is 877994978611. The next prime is 877994978639. The reversal of 877994978620 is 26879499778.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2461954 + ... + 2795926.

It is an arithmetic number, because the mean of its divisors is an integer number (76825375116).

Almost surely, 2^877994978620 is an apocalyptic number.

It is an amenable number.

877994978620 is an abundant number, since it is smaller than the sum of its proper divisors (965814024164).

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

877994978620 is a wasteful number, since it uses less digits than its factorization.

877994978620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465429 (or 465427 counting only the distinct ones).

The product of its (nonzero) digits is 768144384, while the sum is 76.

The spelling of 877994978620 in words is "eight hundred seventy-seven billion, nine hundred ninety-four million, nine hundred seventy-eight thousand, six hundred twenty".