12797481280 has 28 divisors (see below), whose sum is σ = 30474003060. Its totient is φ = 5118992384.

The previous prime is 12797481271. The next prime is 12797481337. The reversal of 12797481280 is 8218479721.

It can be written as a sum of positive squares in 2 ways, for example, as 9867640896 + 2929840384 = 99336^2 + 54128^2 .

It is a super-2 number, since 2×12797481280² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19995745 + ... + 19996384.

Almost surely, 2^12797481280 is an apocalyptic number.

12797481280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12797481280 is an abundant number, since it is smaller than the sum of its proper divisors (17676521780).

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

12797481280 is an equidigital number, since it uses as much as digits as its factorization.

12797481280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39992146 (or 39992136 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 12797481280 in words is "twelve billion, seven hundred ninety-seven million, four hundred eighty-one thousand, two hundred eighty".