561328754101161 has 16 divisors (see below), whose sum is σ = 750120738062400. Its totient is φ = 373378004213760.

The previous prime is 561328754101127. The next prime is 561328754101201. The reversal of 561328754101161 is 161101457823165.

It is not a de Polignac number, because 561328754101161 - 2⁶ = 561328754101097 is a prime.

It is a super-3 number, since 3×561328754101161³ (a number of 45 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (561328754101261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61281666 + ... + 69843396.

It is an arithmetic number, because the mean of its divisors is an integer number (46882546128900).

Almost surely, 2^{561328754101161} is an apocalyptic number.

It is an amenable number.

561328754101161 is a deficient number, since it is larger than the sum of its proper divisors (188791983961239).

561328754101161 is a wasteful number, since it uses less digits than its factorization.

561328754101161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8610856.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 561328754101161 in words is "five hundred sixty-one trillion, three hundred twenty-eight billion, seven hundred fifty-four million, one hundred one thousand, one hundred sixty-one".