159185310745 has 4 divisors (see below), whose sum is σ = 191022372900. Its totient is φ = 127348248592.

The previous prime is 159185310721. The next prime is 159185310749. The reversal of 159185310745 is 547013581951.

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 122731809561 + 36453501184 = 350331^2 + 190928^2 .

It is a cyclic number.

It is not a de Polignac number, because 159185310745 - 2³⁷ = 21746357273 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (159185310749) 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, 15918531070 + ... + 15918531079.

It is an arithmetic number, because the mean of its divisors is an integer number (47755593225).

Almost surely, 2^159185310745 is an apocalyptic number.

It is an amenable number.

159185310745 is a deficient number, since it is larger than the sum of its proper divisors (31837062155).

159185310745 is an equidigital number, since it uses as much as digits as its factorization.

159185310745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31837062154.

The product of its (nonzero) digits is 756000, while the sum is 49.

The spelling of 159185310745 in words is "one hundred fifty-nine billion, one hundred eighty-five million, three hundred ten thousand, seven hundred forty-five".