561671246131 has 4 divisors (see below), whose sum is σ = 563500794472. Its totient is φ = 559841697792.

The previous prime is 561671246119. The next prime is 561671246159. The reversal of 561671246131 is 131642176165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561671246131 - 2¹¹ = 561671244083 is a prime.

It is a super-2 number, since 2×561671246131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561671286131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914773710 + ... + 914774323.

It is an arithmetic number, because the mean of its divisors is an integer number (140875198618).

Almost surely, 2^561671246131 is an apocalyptic number.

561671246131 is a deficient number, since it is larger than the sum of its proper divisors (1829548341).

561671246131 is a wasteful number, since it uses less digits than its factorization.

561671246131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829548340.

The product of its digits is 181440, while the sum is 43.

The spelling of 561671246131 in words is "five hundred sixty-one billion, six hundred seventy-one million, two hundred forty-six thousand, one hundred thirty-one".