12699776448 has 126 divisors (see below), whose sum is σ = 37615380192. Its totient is φ = 4096523520.

The previous prime is 12699776443. The next prime is 12699776513. The reversal of 12699776448 is 84467799621.

It is a super-2 number, since 2×12699776448² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12699776443) 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 17 ways as a sum of consecutive naturals, for example, 542065 + ... + 565007.

Almost surely, 2^12699776448 is an apocalyptic number.

12699776448 is a gapful number since it is divisible by the number (18) 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 12699776448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18807690096).

12699776448 is an abundant number, since it is smaller than the sum of its proper divisors (24915603744).

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

12699776448 is a wasteful number, since it uses less digits than its factorization.

12699776448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23023 (or 22979 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 12699776448 in words is "twelve billion, six hundred ninety-nine million, seven hundred seventy-six thousand, four hundred forty-eight".