86132811979 has 4 divisors (see below), whose sum is σ = 86969052976. Its totient is φ = 85296570984.

The previous prime is 86132811959. The next prime is 86132811997. The reversal of 86132811979 is 97911823168.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 86132811979 - 2⁷ = 86132811851 is a prime.

It is a super-2 number, since 2×86132811979² (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 (86132811959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418120344 + ... + 418120549.

It is an arithmetic number, because the mean of its divisors is an integer number (21742263244).

Almost surely, 2^86132811979 is an apocalyptic number.

86132811979 is a deficient number, since it is larger than the sum of its proper divisors (836240997).

86132811979 is a wasteful number, since it uses less digits than its factorization.

86132811979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836240996.

The product of its digits is 1306368, while the sum is 55.

The spelling of 86132811979 in words is "eighty-six billion, one hundred thirty-two million, eight hundred eleven thousand, nine hundred seventy-nine".