13440373172 has 6 divisors (see below), whose sum is σ = 23520653058. Its totient is φ = 6720186584.

The previous prime is 13440373171. The next prime is 13440373211. The reversal of 13440373172 is 27137304431.

It can be written as a sum of positive squares in only one way, i.e., 13438373776 + 1999396 = 115924^2 + 1414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440373171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680046643 + ... + 1680046650.

It is an arithmetic number, because the mean of its divisors is an integer number (3920108843).

Almost surely, 2^13440373172 is an apocalyptic number.

It is an amenable number.

13440373172 is a deficient number, since it is larger than the sum of its proper divisors (10080279886).

13440373172 is a wasteful number, since it uses less digits than its factorization.

13440373172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360093297 (or 3360093295 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 13440373172 in words is "thirteen billion, four hundred forty million, three hundred seventy-three thousand, one hundred seventy-two".