89756677557 has 16 divisors (see below), whose sum is σ = 133154294080. Its totient is φ = 59756137776.

The previous prime is 89756677489. The next prime is 89756677567. The reversal of 89756677557 is 75577665798.

89756677557 is a `hidden beast` number, since 8 + 9 + 7 + 5 + 6 + 67 + 7 + 557 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-89756677557 is a prime.

It is a super-2 number, since 2×89756677557² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89756677567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2247823 + ... + 2287404.

It is an arithmetic number, because the mean of its divisors is an integer number (8322143380).

Almost surely, 2^89756677557 is an apocalyptic number.

It is an amenable number.

89756677557 is a deficient number, since it is larger than the sum of its proper divisors (43397616523).

89756677557 is a wasteful number, since it uses less digits than its factorization.

89756677557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535969 (or 4535963 counting only the distinct ones).

The product of its digits is 777924000, while the sum is 72.

The spelling of 89756677557 in words is "eighty-nine billion, seven hundred fifty-six million, six hundred seventy-seven thousand, five hundred fifty-seven".