15344147856 has 80 divisors (see below), whose sum is σ = 40164179328. Its totient is φ = 5047296000.

The previous prime is 15344147843. The next prime is 15344147879. The reversal of 15344147856 is 65874144351.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1502640 + ... + 1512816.

Almost surely, 2^15344147856 is an apocalyptic number.

15344147856 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 15344147856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20082089664).

15344147856 is an abundant number, since it is smaller than the sum of its proper divisors (24820031472).

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

15344147856 is a wasteful number, since it uses less digits than its factorization.

15344147856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600 (or 10594 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The spelling of 15344147856 in words is "fifteen billion, three hundred forty-four million, one hundred forty-seven thousand, eight hundred fifty-six".