12997919716 has 24 divisors (see below), whose sum is σ = 23155020000. Its totient is φ = 6382420224.

The previous prime is 12997919681. The next prime is 12997919717. The reversal of 12997919716 is 61791979921.

It is not an unprimeable number, because it can be changed into a prime (12997919717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213460 + ... + 267508.

It is an arithmetic number, because the mean of its divisors is an integer number (964792500).

Almost surely, 2^12997919716 is an apocalyptic number.

It is an amenable number.

12997919716 is a deficient number, since it is larger than the sum of its proper divisors (10157100284).

12997919716 is a wasteful number, since it uses less digits than its factorization.

12997919716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55131 (or 55129 counting only the distinct ones).

The product of its digits is 3857868, while the sum is 61.

The spelling of 12997919716 in words is "twelve billion, nine hundred ninety-seven million, nine hundred nineteen thousand, seven hundred sixteen".