13380907897 has 12 divisors (see below), whose sum is σ = 15646207476. Its totient is φ = 11409914880.

The previous prime is 13380907889. The next prime is 13380907931. The reversal of 13380907897 is 79870908331.

It can be written as a sum of positive squares in 2 ways, for example, as 7356664441 + 6024243456 = 85771^2 + 77616^2 .

It is not a de Polignac number, because 13380907897 - 2³ = 13380907889 is a prime.

It is a super-2 number, since 2×13380907897² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13380907807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 698004 + ... + 716917.

It is an arithmetic number, because the mean of its divisors is an integer number (1303850623).

Almost surely, 2^13380907897 is an apocalyptic number.

It is an amenable number.

13380907897 is a deficient number, since it is larger than the sum of its proper divisors (2265299579).

13380907897 is a wasteful number, since it uses less digits than its factorization.

13380907897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415128 (or 1415121 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 13380907897 in words is "thirteen billion, three hundred eighty million, nine hundred seven thousand, eight hundred ninety-seven".