12897161700 has 72 divisors (see below), whose sum is σ = 37380961632. Its totient is φ = 3433236480.

The previous prime is 12897161593. The next prime is 12897161713. The reversal of 12897161700 is 716179821.

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, 135847 + ... + 210353.

Almost surely, 2^12897161700 is an apocalyptic number.

12897161700 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 12897161700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18690480816).

12897161700 is an abundant number, since it is smaller than the sum of its proper divisors (24483799932).

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

12897161700 is a wasteful number, since it uses less digits than its factorization.

12897161700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75101 (or 75094 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 42.

The spelling of 12897161700 in words is "twelve billion, eight hundred ninety-seven million, one hundred sixty-one thousand, seven hundred".