12397887711 has 24 divisors (see below), whose sum is σ = 19541223936. Its totient is φ = 7511887440.

The previous prime is 12397887683. The next prime is 12397887751. The reversal of 12397887711 is 11778879321.

It is not a de Polignac number, because 12397887711 - 2⁶ = 12397887647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12397887751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 417586 + ... + 446288.

It is an arithmetic number, because the mean of its divisors is an integer number (814217664).

Almost surely, 2^12397887711 is an apocalyptic number.

12397887711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12397887711 is a deficient number, since it is larger than the sum of its proper divisors (7143336225).

12397887711 is a wasteful number, since it uses less digits than its factorization.

12397887711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33083 (or 33080 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 54.

The spelling of 12397887711 in words is "twelve billion, three hundred ninety-seven million, eight hundred eighty-seven thousand, seven hundred eleven".