86022078581 has 4 divisors (see below), whose sum is σ = 86022665664. Its totient is φ = 86021491500.

The previous prime is 86022078553. The next prime is 86022078613. The reversal of 86022078581 is 18587022068.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 86022078581 - 2³⁰ = 84948336757 is a prime.

It is a super-2 number, since 2×86022078581² (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 (86022078521) 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, 128756 + ... + 434306.

It is an arithmetic number, because the mean of its divisors is an integer number (21505666416).

Almost surely, 2^86022078581 is an apocalyptic number.

It is an amenable number.

86022078581 is a deficient number, since it is larger than the sum of its proper divisors (587083).

86022078581 is a wasteful number, since it uses less digits than its factorization.

86022078581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587082.

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 86022078581 in words is "eighty-six billion, twenty-two million, seventy-eight thousand, five hundred eighty-one".