13445732139 has 64 divisors (see below), whose sum is σ = 21179105280. Its totient is φ = 7429968000.

The previous prime is 13445732117. The next prime is 13445732177. The reversal of 13445732139 is 93123754431.

It is not a de Polignac number, because 13445732139 - 2¹⁷ = 13445601067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13445732139.

It is not an unprimeable number, because it can be changed into a prime (13445732239) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24853209 + ... + 24853749.

It is an arithmetic number, because the mean of its divisors is an integer number (330923520).

Almost surely, 2^13445732139 is an apocalyptic number.

13445732139 is a deficient number, since it is larger than the sum of its proper divisors (7733373141).

13445732139 is a wasteful number, since it uses less digits than its factorization.

13445732139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912.

The product of its digits is 272160, while the sum is 42.

The spelling of 13445732139 in words is "thirteen billion, four hundred forty-five million, seven hundred thirty-two thousand, one hundred thirty-nine".