13172540705 has 16 divisors (see below), whose sum is σ = 15852345600. Its totient is φ = 10507881600.

The previous prime is 13172540671. The next prime is 13172540707. The reversal of 13172540705 is 50704527131.

It is not a de Polignac number, because 13172540705 - 2²⁰ = 13171492129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13172540707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3120086 + ... + 3124304.

It is an arithmetic number, because the mean of its divisors is an integer number (990771600).

Almost surely, 2^13172540705 is an apocalyptic number.

It is an amenable number.

13172540705 is a deficient number, since it is larger than the sum of its proper divisors (2679804895).

13172540705 is a wasteful number, since it uses less digits than its factorization.

13172540705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864.

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 13172540705 in words is "thirteen billion, one hundred seventy-two million, five hundred forty thousand, seven hundred five".