13891540141515 has 16 divisors (see below), whose sum is σ = 22321856782368. Its totient is φ = 7377023890176.

The previous prime is 13891540141459. The next prime is 13891540141517. The reversal of 13891540141515 is 51514104519831.

It is not a de Polignac number, because 13891540141515 - 2²⁹ = 13891003270603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13891540141517) 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, 1987341304 + ... + 1987348293.

It is an arithmetic number, because the mean of its divisors is an integer number (1395116048898).

Almost surely, 2^{13891540141515} is an apocalyptic number.

13891540141515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13891540141515 is a deficient number, since it is larger than the sum of its proper divisors (8430316640853).

13891540141515 is a wasteful number, since it uses less digits than its factorization.

13891540141515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974689838.

The product of its (nonzero) digits is 432000, while the sum is 48.

The spelling of 13891540141515 in words is "thirteen trillion, eight hundred ninety-one billion, five hundred forty million, one hundred forty-one thousand, five hundred fifteen".