13444692057 has 6 divisors (see below), whose sum is σ = 19420110762. Its totient is φ = 8963128032.

The previous prime is 13444692043. The next prime is 13444692061. The reversal of 13444692057 is 75029644431.

13444692057 is a `hidden beast` number, since 134 + 4 + 469 + 2 + 0 + 57 = 666.

13444692057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13431882816 + 12809241 = 115896^2 + 3579^2 .

It is not a de Polignac number, because 13444692057 - 2⁸ = 13444691801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13444693057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 746927328 + ... + 746927345.

It is an arithmetic number, because the mean of its divisors is an integer number (3236685127).

Almost surely, 2^13444692057 is an apocalyptic number.

It is an amenable number.

13444692057 is a deficient number, since it is larger than the sum of its proper divisors (5975418705).

13444692057 is a wasteful number, since it uses less digits than its factorization.

13444692057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493854679 (or 1493854676 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 13444692057 in words is "thirteen billion, four hundred forty-four million, six hundred ninety-two thousand, fifty-seven".