123115015296 has 384 divisors, whose sum is σ = 454999184640. Its totient is φ = 31057551360.

The previous prime is 123115015267. The next prime is 123115015321. The reversal of 123115015296 is 692510511321.

It is a happy number.

123115015296 is a `hidden beast` number, since 1 + 2 + 3 + 11 + 501 + 52 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 123115015296.

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, 2385606 + ... + 2436666.

It is an arithmetic number, because the mean of its divisors is an integer number (1184893710).

Almost surely, 2^123115015296 is an apocalyptic number.

123115015296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123115015296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227499592320).

123115015296 is an abundant number, since it is smaller than the sum of its proper divisors (331884169344).

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

123115015296 is a wasteful number, since it uses less digits than its factorization.

123115015296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51124 (or 51109 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The spelling of 123115015296 in words is "one hundred twenty-three billion, one hundred fifteen million, fifteen thousand, two hundred ninety-six".