15217772260 has 24 divisors (see below), whose sum is σ = 31959882360. Its totient is φ = 6086621184.

The previous prime is 15217772179. The next prime is 15217772261. The reversal of 15217772260 is 6227771251.

It can be written as a sum of positive squares in 4 ways, for example, as 2056356 + 15215715904 = 1434^2 + 123352^2 .

It is not an unprimeable number, because it can be changed into a prime (15217772261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328452 + ... + 371908.

It is an arithmetic number, because the mean of its divisors is an integer number (1331661765).

Almost surely, 2^15217772260 is an apocalyptic number.

15217772260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15217772260 is an abundant number, since it is smaller than the sum of its proper divisors (16742110100).

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

15217772260 is a wasteful number, since it uses less digits than its factorization.

15217772260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60975 (or 60973 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 15217772260 in words is "fifteen billion, two hundred seventeen million, seven hundred seventy-two thousand, two hundred sixty".