154596560561 has 4 divisors (see below), whose sum is σ = 157513476852. Its totient is φ = 151679644272.

The previous prime is 154596560551. The next prime is 154596560603. The reversal of 154596560561 is 165065695451.

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 39696577600 + 114899982961 = 199240^2 + 338969^2 .

It is a cyclic number.

It is not a de Polignac number, because 154596560561 - 2¹⁴ = 154596544177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 2916916237 = 154596560561 / (1 + 5 + 4 + 5 + 9 + 6 + 5 + 6 + 0 + 5 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154596560551) 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, 1458458066 + ... + 1458458171.

It is an arithmetic number, because the mean of its divisors is an integer number (39378369213).

Almost surely, 2^154596560561 is an apocalyptic number.

It is an amenable number.

154596560561 is a deficient number, since it is larger than the sum of its proper divisors (2916916291).

154596560561 is an equidigital number, since it uses as much as digits as its factorization.

154596560561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916916290.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 154596560561 in words is "one hundred fifty-four billion, five hundred ninety-six million, five hundred sixty thousand, five hundred sixty-one".