86132811977 has 4 divisors (see below), whose sum is σ = 86137782660. Its totient is φ = 86127841296.

The previous prime is 86132811959. The next prime is 86132811997. The reversal of 86132811977 is 77911823168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51200828176 + 34931983801 = 226276^2 + 186901^2 .

It is a cyclic number.

It is not a de Polignac number, because 86132811977 - 2¹² = 86132807881 is a prime.

It is a super-2 number, since 2×86132811977² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86132811997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2459258 + ... + 2494035.

It is an arithmetic number, because the mean of its divisors is an integer number (21534445665).

Almost surely, 2^86132811977 is an apocalyptic number.

It is an amenable number.

86132811977 is a deficient number, since it is larger than the sum of its proper divisors (4970683).

86132811977 is a wasteful number, since it uses less digits than its factorization.

86132811977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4970682.

The product of its digits is 1016064, while the sum is 53.

The spelling of 86132811977 in words is "eighty-six billion, one hundred thirty-two million, eight hundred eleven thousand, nine hundred seventy-seven".