86516021715 has 32 divisors (see below), whose sum is σ = 142100614656. Its totient is φ = 44923791360.

The previous prime is 86516021689. The next prime is 86516021719. The reversal of 86516021715 is 51712061568.

It is not a de Polignac number, because 86516021715 - 2⁹ = 86516021203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86516021719) 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 31 ways as a sum of consecutive naturals, for example, 15054 + ... + 416243.

It is an arithmetic number, because the mean of its divisors is an integer number (4440644208).

Almost surely, 2^86516021715 is an apocalyptic number.

86516021715 is a deficient number, since it is larger than the sum of its proper divisors (55584592941).

86516021715 is a wasteful number, since it uses less digits than its factorization.

86516021715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431659.

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 86516021715 in words is "eighty-six billion, five hundred sixteen million, twenty-one thousand, seven hundred fifteen".