162585613561 has 4 divisors (see below), whose sum is σ = 185812129792. Its totient is φ = 139359097332.

The previous prime is 162585613499. The next prime is 162585613577. The reversal of 162585613561 is 165316585261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165316585261 = 73 ⋅2264610757.

It is not a de Polignac number, because 162585613561 - 2⁷ = 162585613433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162585614561) by changing a digit.

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, 11613258105 + ... + 11613258118.

It is an arithmetic number, because the mean of its divisors is an integer number (46453032448).

Almost surely, 2^162585613561 is an apocalyptic number.

It is an amenable number.

162585613561 is a deficient number, since it is larger than the sum of its proper divisors (23226516231).

162585613561 is an equidigital number, since it uses as much as digits as its factorization.

162585613561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23226516230.

The product of its digits is 1296000, while the sum is 49.

The spelling of 162585613561 in words is "one hundred sixty-two billion, five hundred eighty-five million, six hundred thirteen thousand, five hundred sixty-one".