15321270660 has 96 divisors (see below), whose sum is σ = 44499100800. Its totient is φ = 3935941632.

The previous prime is 15321270637. The next prime is 15321270667. The reversal of 15321270660 is 6607212351.

It is not an unprimeable number, because it can be changed into a prime (15321270667) 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, 147666 + ... + 229014.

It is an arithmetic number, because the mean of its divisors is an integer number (463532300).

Almost surely, 2^15321270660 is an apocalyptic number.

15321270660 is a gapful number since it is divisible by the number (10) 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 15321270660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22249550400).

15321270660 is an abundant number, since it is smaller than the sum of its proper divisors (29177830140).

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

15321270660 is a wasteful number, since it uses less digits than its factorization.

15321270660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81477 (or 81475 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The spelling of 15321270660 in words is "fifteen billion, three hundred twenty-one million, two hundred seventy thousand, six hundred sixty".