877375042489 has 27 divisors (see below), whose sum is σ = 1024657660621. Its totient is φ = 750545354240.

The previous prime is 877375042469. The next prime is 877375042493. The reversal of 877375042489 is 984240573778.

The square root of 877375042489 is 936683.

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

877375042489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61229028025 + 816146014464 = 247445^2 + 903408^2 .

It is not a de Polignac number, because 877375042489 - 2²³ = 877366653881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 877375042489.

It is not an unprimeable number, because it can be changed into a prime (877375042459) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 175157217 + ... + 175162225.

Almost surely, 2^877375042489 is an apocalyptic number.

877375042489 is the 936683-rd square number.

877375042489 is the 468342-nd centered octagonal number.

It is an amenable number.

877375042489 is a deficient number, since it is larger than the sum of its proper divisors (147282618132).

877375042489 is an frugal number, since it uses more digits than its factorization.

877375042489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10074 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 64.

Multiplying 877375042489 by its sum of digits (64), we get a square (56152002719296 = 7493464²).

The spelling of 877375042489 in words is "eight hundred seventy-seven billion, three hundred seventy-five million, forty-two thousand, four hundred eighty-nine".