13423251644 has 36 divisors (see below), whose sum is σ = 25903131072. Its totient is φ = 6081915840.

The previous prime is 13423251641. The next prime is 13423251671. The reversal of 13423251644 is 44615232431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423251641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107189 + ... + 195795.

Almost surely, 2^13423251644 is an apocalyptic number.

It is an amenable number.

13423251644 is a deficient number, since it is larger than the sum of its proper divisors (12479879428).

13423251644 is a wasteful number, since it uses less digits than its factorization.

13423251644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88946 (or 88933 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The spelling of 13423251644 in words is "thirteen billion, four hundred twenty-three million, two hundred fifty-one thousand, six hundred forty-four".