12429655944 has 32 divisors (see below), whose sum is σ = 32902031520. Its totient is φ = 3899499776.

The previous prime is 12429655921. The next prime is 12429655957. The reversal of 12429655944 is 44955692421.

It is a super-2 number, since 2×12429655944² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 15232014 + ... + 15232829.

It is an arithmetic number, because the mean of its divisors is an integer number (1028188485).

Almost surely, 2^12429655944 is an apocalyptic number.

It is an amenable number.

12429655944 is an abundant number, since it is smaller than the sum of its proper divisors (20472375576).

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

12429655944 is a wasteful number, since it uses less digits than its factorization.

12429655944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30464869 (or 30464865 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 51.

The spelling of 12429655944 in words is "twelve billion, four hundred twenty-nine million, six hundred fifty-five thousand, nine hundred forty-four".