13897638145 has 16 divisors (see below), whose sum is σ = 16939562688. Its totient is φ = 10943444160.

The previous prime is 13897638143. The next prime is 13897638149. The reversal of 13897638145 is 54183679831.

It is not a de Polignac number, because 13897638145 - 2¹ = 13897638143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13897638143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421975 + ... + 453715.

It is an arithmetic number, because the mean of its divisors is an integer number (1058722668).

Almost surely, 2^13897638145 is an apocalyptic number.

It is an amenable number.

13897638145 is a deficient number, since it is larger than the sum of its proper divisors (3041924543).

13897638145 is a wasteful number, since it uses less digits than its factorization.

13897638145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33120.

The product of its digits is 4354560, while the sum is 55.

The spelling of 13897638145 in words is "thirteen billion, eight hundred ninety-seven million, six hundred thirty-eight thousand, one hundred forty-five".