12691224096 has 48 divisors (see below), whose sum is σ = 34762924224. Its totient is φ = 4046476544.

The previous prime is 12691224083. The next prime is 12691224101. The reversal of 12691224096 is 69042219621.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12691224096² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871711 + ... + 2876126.

It is an arithmetic number, because the mean of its divisors is an integer number (724227588).

Almost surely, 2^12691224096 is an apocalyptic number.

12691224096 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12691224096 is an abundant number, since it is smaller than the sum of its proper divisors (22071700128).

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

12691224096 is a wasteful number, since it uses less digits than its factorization.

12691224096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747873 (or 5747865 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 12691224096 in words is "twelve billion, six hundred ninety-one million, two hundred twenty-four thousand, ninety-six".