13440373252 has 6 divisors (see below), whose sum is σ = 23520653198. Its totient is φ = 6720186624.

The previous prime is 13440373241. The next prime is 13440373307. The reversal of 13440373252 is 25237304431.

It can be written as a sum of positive squares in only one way, i.e., 12763124676 + 677248576 = 112974^2 + 26024^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1680046653 + ... + 1680046660.

Almost surely, 2^13440373252 is an apocalyptic number.

It is an amenable number.

13440373252 is a deficient number, since it is larger than the sum of its proper divisors (10080279946).

13440373252 is a wasteful number, since it uses less digits than its factorization.

13440373252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360093317 (or 3360093315 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 34.

Adding to 13440373252 its reverse (25237304431), we get a palindrome (38677677683).

The spelling of 13440373252 in words is "thirteen billion, four hundred forty million, three hundred seventy-three thousand, two hundred fifty-two".