15121434456 has 160 divisors (see below), whose sum is σ = 45137917440. Its totient is φ = 4718526912.

The previous prime is 15121434439. The next prime is 15121434467. The reversal of 15121434456 is 65443412151.

15121434456 is a `hidden beast` number, since 1 + 51 + 214 + 344 + 56 = 666.

15121434456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15121434456.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 689695 + ... + 711281.

It is an arithmetic number, because the mean of its divisors is an integer number (282111984).

Almost surely, 2^15121434456 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 15121434456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22568958720).

15121434456 is an abundant number, since it is smaller than the sum of its proper divisors (30016482984).

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

15121434456 is a wasteful number, since it uses less digits than its factorization.

15121434456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21675 (or 21662 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 15121434456 in words is "fifteen billion, one hundred twenty-one million, four hundred thirty-four thousand, four hundred fifty-six".