15105555105161 has 4 divisors (see below), whose sum is σ = 15105887162772. Its totient is φ = 15105223047552.

The previous prime is 15105555105107. The next prime is 15105555105169. The reversal of 15105555105161 is 16150155550151.

15105555105161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8790964081936 + 6314591023225 = 2964956^2 + 2512885^2 .

It is a cyclic number.

It is not a de Polignac number, because 15105555105161 - 2¹⁰ = 15105555104137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15105555105169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165960560 + ... + 166051553.

It is an arithmetic number, because the mean of its divisors is an integer number (3776471790693).

Almost surely, 2^{15105555105161} is an apocalyptic number.

It is an amenable number.

15105555105161 is a deficient number, since it is larger than the sum of its proper divisors (332057611).

15105555105161 is an equidigital number, since it uses as much as digits as its factorization.

15105555105161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332057610.

The product of its (nonzero) digits is 93750, while the sum is 41.

The spelling of 15105555105161 in words is "fifteen trillion, one hundred five billion, five hundred fifty-five million, one hundred five thousand, one hundred sixty-one".