15196557568 has 36 divisors (see below), whose sum is σ = 30413150208. Its totient is φ = 7578391040.

The previous prime is 15196557557. The next prime is 15196557569. The reversal of 15196557568 is 86575569151.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15196557569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20553 + ... + 175543.

It is an arithmetic number, because the mean of its divisors is an integer number (844809728).

Almost surely, 2^15196557568 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 15196557568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15206575104).

15196557568 is an abundant number, since it is smaller than the sum of its proper divisors (15216592640).

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

15196557568 is an equidigital number, since it uses as much as digits as its factorization.

15196557568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155390 (or 155376 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 58.

The spelling of 15196557568 in words is "fifteen billion, one hundred ninety-six million, five hundred fifty-seven thousand, five hundred sixty-eight".