15605254436155 has 4 divisors (see below), whose sum is σ = 18726305323392. Its totient is φ = 12484203548920.

The previous prime is 15605254436141. The next prime is 15605254436203. The reversal of 15605254436155 is 55163445250651.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15605254436155 - 2¹³ = 15605254427963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560525443611 + ... + 1560525443620.

It is an arithmetic number, because the mean of its divisors is an integer number (4681576330848).

Almost surely, 2^{15605254436155} is an apocalyptic number.

15605254436155 is a deficient number, since it is larger than the sum of its proper divisors (3121050887237).

15605254436155 is an equidigital number, since it uses as much as digits as its factorization.

15605254436155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121050887236.

The product of its (nonzero) digits is 10800000, while the sum is 52.

The spelling of 15605254436155 in words is "fifteen trillion, six hundred five billion, two hundred fifty-four million, four hundred thirty-six thousand, one hundred fifty-five".