877104440991 has 48 divisors (see below), whose sum is σ = 1288564333056. Its totient is φ = 574843756608.

The previous prime is 877104440981. The next prime is 877104441007. The reversal of 877104440991 is 199044401778.

877104440991 is a `hidden beast` number, since 8 + 7 + 7 + 104 + 440 + 9 + 91 = 666.

It is not a de Polignac number, because 877104440991 - 2⁵ = 877104440959 is a prime.

It is a super-2 number, since 2×877104440991² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877104440911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116585956 + ... + 116593478.

It is an arithmetic number, because the mean of its divisors is an integer number (26845090272).

Almost surely, 2^877104440991 is an apocalyptic number.

877104440991 is a deficient number, since it is larger than the sum of its proper divisors (411459892065).

877104440991 is a wasteful number, since it uses less digits than its factorization.

877104440991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532 (or 8529 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 877104440991 in words is "eight hundred seventy-seven billion, one hundred four million, four hundred forty thousand, nine hundred ninety-one".