83415215856 has 120 divisors (see below), whose sum is σ = 250824434304. Its totient is φ = 23818354560.

The previous prime is 83415215843. The next prime is 83415215867. The reversal of 83415215856 is 65851251438.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 23 ways as a sum of consecutive naturals, for example, 4183671 + ... + 4203561.

Almost surely, 2^83415215856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83415215856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125412217152).

83415215856 is an abundant number, since it is smaller than the sum of its proper divisors (167409218448).

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

83415215856 is a wasteful number, since it uses less digits than its factorization.

83415215856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21699 (or 21686 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 48.

The spelling of 83415215856 in words is "eighty-three billion, four hundred fifteen million, two hundred fifteen thousand, eight hundred fifty-six".