86435722215 has 16 divisors (see below), whose sum is σ = 153663506400. Its totient is φ = 46099051776.

The previous prime is 86435722181. The next prime is 86435722231. The reversal of 86435722215 is 51222753468.

86435722215 is a `hidden beast` number, since 8 + 6 + 43 + 572 + 22 + 15 = 666.

It is not a de Polignac number, because 86435722215 - 2⁸ = 86435721959 is a prime.

It is a super-2 number, since 2×86435722215² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320132170 + ... + 320132439.

It is an arithmetic number, because the mean of its divisors is an integer number (9603969150).

Almost surely, 2^86435722215 is an apocalyptic number.

86435722215 is a deficient number, since it is larger than the sum of its proper divisors (67227784185).

86435722215 is a wasteful number, since it uses less digits than its factorization.

86435722215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640264623 (or 640264617 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 86435722215 in words is "eighty-six billion, four hundred thirty-five million, seven hundred twenty-two thousand, two hundred fifteen".