13390644373 has 2 divisors, whose sum is σ = 13390644374. Its totient is φ = 13390644372.

The previous prime is 13390644271. The next prime is 13390644419. The reversal of 13390644373 is 37344609331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11562055729 + 1828588644 = 107527^2 + 42762^2 .

It is a cyclic number.

It is not a de Polignac number, because 13390644373 - 2²⁹ = 12853773461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13390654373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6695322186 + 6695322187.

It is an arithmetic number, because the mean of its divisors is an integer number (6695322187).

Almost surely, 2^13390644373 is an apocalyptic number.

It is an amenable number.

13390644373 is a deficient number, since it is larger than the sum of its proper divisors (1).

13390644373 is an equidigital number, since it uses as much as digits as its factorization.

13390644373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 43.

The spelling of 13390644373 in words is "thirteen billion, three hundred ninety million, six hundred forty-four thousand, three hundred seventy-three".