877989614121 has 27 divisors (see below), whose sum is σ = 1272758929533. Its totient is φ = 583233126840.

The previous prime is 877989614119. The next prime is 877989614123. The reversal of 877989614121 is 121416989778.

The square root of 877989614121 is 937011.

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

877989614121 is a `hidden beast` number, since 8 + 7 + 7 + 9 + 8 + 9 + 614 + 1 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (877989614119) and next prime (877989614123).

It is not a de Polignac number, because 877989614121 - 2¹ = 877989614119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (877989614123) 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, 1537634766 + ... + 1537635336.

Almost surely, 2^877989614121 is an apocalyptic number.

877989614121 is the 937011-st square number.

877989614121 is the 468506-th centered octagonal number.

It is an amenable number.

877989614121 is a deficient number, since it is larger than the sum of its proper divisors (394769315412).

877989614121 is an frugal number, since it uses more digits than its factorization.

877989614121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242 (or 1121 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The spelling of 877989614121 in words is "eight hundred seventy-seven billion, nine hundred eighty-nine million, six hundred fourteen thousand, one hundred twenty-one".