15557597153344 has 49 divisors (see below), whose sum is σ = 31267903092847. Its totient is φ = 7680332771904.

The previous prime is 15557597153339. The next prime is 15557597153369. The reversal of 15557597153344 is 44335179575551.

It is a happy number.

The square root of 15557597153344 is 3944312.

The cubic root of 15557597153344 is 24964.

It is a perfect power (a square, a cube, a 6-th power), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

Its product of digits (198450000) is a multiple of the sum of its prime divisors (81).

It is an unprimeable number.

It is a polite number, since it can be written in 6 ways as a sum of consecutive naturals, for example, 196931609497 + ... + 196931609575.

Almost surely, 2^{15557597153344} is an apocalyptic number.

15557597153344 is the 3944312-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15557597153344

15557597153344 is an abundant number, since it is smaller than the sum of its proper divisors (15710305939503).

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

15557597153344 is an frugal number, since it uses more digits than its factorization.

15557597153344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 81 counting only the distinct ones).

The product of its digits is 198450000, while the sum is 64.

Multiplying 15557597153344 by its sum of digits (64), we get a 6-th power (995686217814016 = 316⁶).

15557597153344 divided by its sum of digits (64) gives a 6-th power (243087455521 = 79⁶).

The spelling of 15557597153344 in words is "fifteen trillion, five hundred fifty-seven billion, five hundred ninety-seven million, one hundred fifty-three thousand, three hundred forty-four".