877277630161 has 9 divisors (see below), whose sum is σ = 880065426331. Its totient is φ = 874498645984.

The previous prime is 877277630149. The next prime is 877277630167. The reversal of 877277630161 is 161036772778.

The square root of 877277630161 is 936631.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 421760623761 + 455517006400 = 649431^2 + 674920^2 .

It is not a de Polignac number, because 877277630161 - 2²¹ = 877275533009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (877277630167) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 336249225 + ... + 336251833.

Almost surely, 2^877277630161 is an apocalyptic number.

877277630161 is the 936631-st square number.

877277630161 is the 468316-th centered octagonal number.

It is an amenable number.

877277630161 is a deficient number, since it is larger than the sum of its proper divisors (2787796170).

877277630161 is an frugal number, since it uses more digits than its factorization.

877277630161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936 (or 2968 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 55.

The spelling of 877277630161 in words is "eight hundred seventy-seven billion, two hundred seventy-seven million, six hundred thirty thousand, one hundred sixty-one".