86177485957 has 4 divisors (see below), whose sum is σ = 88011049536. Its totient is φ = 84343922380.

The previous prime is 86177485921. The next prime is 86177485969. The reversal of 86177485957 is 75958477168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-86177485957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86177485892 and 86177485901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86177485997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916781719 + ... + 916781812.

It is an arithmetic number, because the mean of its divisors is an integer number (22002762384).

Almost surely, 2^86177485957 is an apocalyptic number.

It is an amenable number.

86177485957 is a deficient number, since it is larger than the sum of its proper divisors (1833563579).

86177485957 is a wasteful number, since it uses less digits than its factorization.

86177485957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833563578.

The product of its digits is 118540800, while the sum is 67.

The spelling of 86177485957 in words is "eighty-six billion, one hundred seventy-seven million, four hundred eighty-five thousand, nine hundred fifty-seven".