15472731456 has 756 divisors, whose sum is σ = 58947356832. Its totient is φ = 3940005888.

The previous prime is 15472731431. The next prime is 15472731457. The reversal of 15472731456 is 65413727451.

15472731456 is a `hidden beast` number, since 1 + 547 + 27 + 31 + 4 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (756).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15472731457) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 533542450 + ... + 533542478.

Almost surely, 2^15472731456 is an apocalyptic number.

15472731456 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 15472731456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29473678416).

15472731456 is an abundant number, since it is smaller than the sum of its proper divisors (43474625376).

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

15472731456 is an equidigital number, since it uses as much as digits as its factorization.

15472731456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 54 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The spelling of 15472731456 in words is "fifteen billion, four hundred seventy-two million, seven hundred thirty-one thousand, four hundred fifty-six".