83415215855 has 16 divisors (see below), whose sum is σ = 101807108928. Its totient is φ = 65594400000.

The previous prime is 83415215843. The next prime is 83415215867. The reversal of 83415215855 is 55851251438.

It is an interprime number because it is at equal distance from previous prime (83415215843) and next prime (83415215867).

It is not a de Polignac number, because 83415215855 - 2²⁸ = 83146780399 is a prime.

It is a super-2 number, since 2×83415215855² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 370355 + ... + 551355.

It is an arithmetic number, because the mean of its divisors is an integer number (6362944308).

Almost surely, 2^83415215855 is an apocalyptic number.

83415215855 is a deficient number, since it is larger than the sum of its proper divisors (18391893073).

83415215855 is a wasteful number, since it uses less digits than its factorization.

83415215855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182578.

The product of its digits is 960000, while the sum is 47.

The spelling of 83415215855 in words is "eighty-three billion, four hundred fifteen million, two hundred fifteen thousand, eight hundred fifty-five".