15536220672 has 320 divisors, whose sum is σ = 49634323200. Its totient is φ = 4313530368.

The previous prime is 15536220671. The next prime is 15536220701. The reversal of 15536220672 is 27602263551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15536220672.

It is not an unprimeable number, because it can be changed into a prime (15536220671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19492978 + ... + 19493774.

It is an arithmetic number, because the mean of its divisors is an integer number (155107260).

Almost surely, 2^15536220672 is an apocalyptic number.

15536220672 is a gapful number since it is divisible by the number (12) 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 15536220672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24817161600).

15536220672 is an abundant number, since it is smaller than the sum of its proper divisors (34098102528).

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

15536220672 is an frugal number, since it uses more digits than its factorization.

15536220672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 15536220672 in words is "fifteen billion, five hundred thirty-six million, two hundred twenty thousand, six hundred seventy-two".