86515206505 has 16 divisors (see below), whose sum is σ = 127776305664. Its totient is φ = 54761273280.

The previous prime is 86515206493. The next prime is 86515206517. The reversal of 86515206505 is 50560251568.

It is an interprime number because it is at equal distance from previous prime (86515206493) and next prime (86515206517).

It is not a de Polignac number, because 86515206505 - 2¹³ = 86515198313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95071201 + ... + 95072110.

It is an arithmetic number, because the mean of its divisors is an integer number (7986019104).

Almost surely, 2^86515206505 is an apocalyptic number.

It is an amenable number.

86515206505 is a deficient number, since it is larger than the sum of its proper divisors (41261099159).

86515206505 is a wasteful number, since it uses less digits than its factorization.

86515206505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190143336.

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 86515206505 in words is "eighty-six billion, five hundred fifteen million, two hundred six thousand, five hundred five".