123522315251216 has 40 divisors (see below), whose sum is σ = 274522973762304. Its totient is φ = 52742791422720.

The previous prime is 123522315251197. The next prime is 123522315251219. The reversal of 123522315251216 is 612152513225321.

It is not an unprimeable number, because it can be changed into a prime (123522315251219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034799565 + ... + 2034860268.

Almost surely, 2^{123522315251216} is an apocalyptic number.

123522315251216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123522315251216 is an abundant number, since it is smaller than the sum of its proper divisors (151000658511088).

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

123522315251216 is a wasteful number, since it uses less digits than its factorization.

123522315251216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069660119 (or 4069660113 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

Adding to 123522315251216 its reverse (612152513225321), we get a palindrome (735674828476537).

The spelling of 123522315251216 in words is "one hundred twenty-three trillion, five hundred twenty-two billion, three hundred fifteen million, two hundred fifty-one thousand, two hundred sixteen".