85515245715 has 16 divisors (see below), whose sum is σ = 136837554336. Its totient is φ = 45603744000.

The previous prime is 85515245681. The next prime is 85515245731. The reversal of 85515245715 is 51754251558.

It is not a de Polignac number, because 85515245715 - 2¹³ = 85515237523 is a prime.

It is a super-2 number, since 2×85515245715² (a number of 23 digits) contains 22 as substring.

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, 109876 + ... + 427905.

It is an arithmetic number, because the mean of its divisors is an integer number (8552347146).

Almost surely, 2^85515245715 is an apocalyptic number.

85515245715 is a deficient number, since it is larger than the sum of its proper divisors (51322308621).

85515245715 is a wasteful number, since it uses less digits than its factorization.

85515245715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548390.

The product of its digits is 1400000, while the sum is 48.

The spelling of 85515245715 in words is "eighty-five billion, five hundred fifteen million, two hundred forty-five thousand, seven hundred fifteen".