12722797560 has 64 divisors (see below), whose sum is σ = 41638250880. Its totient is φ = 3084314240.

The previous prime is 12722797523. The next prime is 12722797561. The reversal of 12722797560 is 6579722721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722797561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4817922 + ... + 4820561.

It is an arithmetic number, because the mean of its divisors is an integer number (650597670).

Almost surely, 2^12722797560 is an apocalyptic number.

12722797560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12722797560 is an abundant number, since it is smaller than the sum of its proper divisors (28915453320).

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

12722797560 is a wasteful number, since it uses less digits than its factorization.

12722797560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9638508 (or 9638504 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 48.

The spelling of 12722797560 in words is "twelve billion, seven hundred twenty-two million, seven hundred ninety-seven thousand, five hundred sixty".