13891213745 has 16 divisors (see below), whose sum is σ = 17399024640. Its totient is φ = 10626859584.

The previous prime is 13891213691. The next prime is 13891213781. The reversal of 13891213745 is 54731219831.

It is a cyclic number.

It is not a de Polignac number, because 13891213745 - 2⁸ = 13891213489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13891213696 and 13891213705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459971 + ... + 489239.

It is an arithmetic number, because the mean of its divisors is an integer number (1087439040).

Almost surely, 2^13891213745 is an apocalyptic number.

It is an amenable number.

13891213745 is a deficient number, since it is larger than the sum of its proper divisors (3507810895).

13891213745 is a wasteful number, since it uses less digits than its factorization.

13891213745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33424.

The product of its digits is 181440, while the sum is 44.

The spelling of 13891213745 in words is "thirteen billion, eight hundred ninety-one million, two hundred thirteen thousand, seven hundred forty-five".