561472274165 has 16 divisors (see below), whose sum is σ = 736323829056. Its totient is φ = 407618150400.

The previous prime is 561472274159. The next prime is 561472274179.

It is a happy number.

561472274165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 561472274165 - 2⁴ = 561472274149 is a prime.

It is a super-2 number, since 2×561472274165² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9035276 + ... + 9097205.

It is an arithmetic number, because the mean of its divisors is an integer number (46020239316).

Almost surely, 2^561472274165 is an apocalyptic number.

561472274165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561472274165 is a deficient number, since it is larger than the sum of its proper divisors (174851554891).

561472274165 is a wasteful number, since it uses less digits than its factorization.

561472274165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18133060.

The product of its digits is 2822400, while the sum is 50.

The spelling of 561472274165 in words is "five hundred sixty-one billion, four hundred seventy-two million, two hundred seventy-four thousand, one hundred sixty-five".