985215262815 has 96 divisors (see below), whose sum is σ = 2096310528000. Its totient is φ = 426679565760.

The previous prime is 985215262783. The next prime is 985215262859. The reversal of 985215262815 is 518262512589.

985215262815 is a `hidden beast` number, since 9 + 8 + 5 + 2 + 1 + 5 + 2 + 628 + 1 + 5 = 666.

It is not a de Polignac number, because 985215262815 - 2⁵ = 985215262783 is a prime.

It is a super-2 number, since 2×985215262815² (a number of 25 digits) contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 1386471 + ... + 1973000.

It is an arithmetic number, because the mean of its divisors is an integer number (21836568000).

Almost surely, 2^985215262815 is an apocalyptic number.

985215262815 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

985215262815 is an abundant number, since it is smaller than the sum of its proper divisors (1111095265185).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985215262815 is a wasteful number, since it uses less digits than its factorization.

985215262815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359522 (or 3359505 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 54.

The spelling of 985215262815 in words is "nine hundred eighty-five billion, two hundred fifteen million, two hundred sixty-two thousand, eight hundred fifteen".