13123402444 has 24 divisors (see below), whose sum is σ = 23048348400. Its totient is φ = 6538203840.

The previous prime is 13123402427. The next prime is 13123402469. The reversal of 13123402444 is 44420432131.

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, 1336834 + ... + 1346614.

It is an arithmetic number, because the mean of its divisors is an integer number (960347850).

Almost surely, 2^13123402444 is an apocalyptic number.

It is an amenable number.

13123402444 is a deficient number, since it is larger than the sum of its proper divisors (9924945956).

13123402444 is a wasteful number, since it uses less digits than its factorization.

13123402444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10953 (or 10951 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 13123402444 its reverse (44420432131), we get a palindrome (57543834575).

The spelling of 13123402444 in words is "thirteen billion, one hundred twenty-three million, four hundred two thousand, four hundred forty-four".