15861348163 has 4 divisors (see below), whose sum is σ = 15865438968. Its totient is φ = 15857257360.

The previous prime is 15861348157. The next prime is 15861348179. The reversal of 15861348163 is 36184316851.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 15861348163 - 2²⁹ = 15324477251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15861348463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2039581 + ... + 2047342.

It is an arithmetic number, because the mean of its divisors is an integer number (3966359742).

Almost surely, 2^15861348163 is an apocalyptic number.

15861348163 is a deficient number, since it is larger than the sum of its proper divisors (4090805).

15861348163 is an equidigital number, since it uses as much as digits as its factorization.

15861348163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090804.

The product of its digits is 414720, while the sum is 46.

The spelling of 15861348163 in words is "fifteen billion, eight hundred sixty-one million, three hundred forty-eight thousand, one hundred sixty-three".