12897137160 has 96 divisors (see below), whose sum is σ = 42095865240. Its totient is φ = 3424453632.

The previous prime is 12897137059. The next prime is 12897137171. The reversal of 12897137160 is 6173179821.

It can be written as a sum of positive squares in 4 ways, for example, as 10878072804 + 2019064356 = 104298^2 + 44934^2 .

It is a super-2 number, since 2×12897137160² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7002 + ... + 160758.

Almost surely, 2^12897137160 is an apocalyptic number.

12897137160 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 12897137160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21047932620).

12897137160 is an abundant number, since it is smaller than the sum of its proper divisors (29198728080).

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

12897137160 is a wasteful number, since it uses less digits than its factorization.

12897137160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154007 (or 154000 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 12897137160 in words is "twelve billion, eight hundred ninety-seven million, one hundred thirty-seven thousand, one hundred sixty".