83215551861015 has 48 divisors (see below), whose sum is σ = 152597889650688. Its totient is φ = 37933623180288.

The previous prime is 83215551860867. The next prime is 83215551861061. The reversal of 83215551861015 is 51016815551238.

It is not a de Polignac number, because 83215551861015 - 2⁸ = 83215551860759 is a prime.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9903882 + ... + 16264008.

It is an arithmetic number, because the mean of its divisors is an integer number (3179122701056).

Almost surely, 2^{83215551861015} is an apocalyptic number.

83215551861015 is a deficient number, since it is larger than the sum of its proper divisors (69382337789673).

83215551861015 is an equidigital number, since it uses as much as digits as its factorization.

83215551861015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360848 (or 6360495 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 51.

The spelling of 83215551861015 in words is "eighty-three trillion, two hundred fifteen billion, five hundred fifty-one million, eight hundred sixty-one thousand, fifteen".