877629664691 has 8 divisors (see below), whose sum is σ = 950732183520. Its totient is φ = 810119688456.

The previous prime is 877629664687. The next prime is 877629664699. The reversal of 877629664691 is 196466926778.

It is not a de Polignac number, because 877629664691 - 2² = 877629664687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (877629664699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199731455 + ... + 199735848.

It is an arithmetic number, because the mean of its divisors is an integer number (118841522940).

Almost surely, 2^877629664691 is an apocalyptic number.

877629664691 is a deficient number, since it is larger than the sum of its proper divisors (73102518829).

877629664691 is an equidigital number, since it uses as much as digits as its factorization.

877629664691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399467342 (or 399467316 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 71.

The spelling of 877629664691 in words is "eight hundred seventy-seven billion, six hundred twenty-nine million, six hundred sixty-four thousand, six hundred ninety-one".