13012423444 has 6 divisors (see below), whose sum is σ = 22771741034. Its totient is φ = 6506211720.

The previous prime is 13012423433. The next prime is 13012423481. The reversal of 13012423444 is 44432421031.

It can be written as a sum of positive squares in only one way, i.e., 11554100100 + 1458323344 = 107490^2 + 38188^2 .

It is a super-2 number, since 2×13012423444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1626552927 + ... + 1626552934.

Almost surely, 2^13012423444 is an apocalyptic number.

It is an amenable number.

13012423444 is a deficient number, since it is larger than the sum of its proper divisors (9759317590).

13012423444 is a wasteful number, since it uses less digits than its factorization.

13012423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253105865 (or 3253105863 counting only the distinct ones).

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

Adding to 13012423444 its reverse (44432421031), we get a palindrome (57444844475).

The spelling of 13012423444 in words is "thirteen billion, twelve million, four hundred twenty-three thousand, four hundred forty-four".