3561131273873 has 8 divisors (see below), whose sum is σ = 3677645427456. Its totient is φ = 3444719554800.

The previous prime is 3561131273851. The next prime is 3561131273897. The reversal of 3561131273873 is 3783721311653.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3561131273873 - 2¹⁰ = 3561131272849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3561131273813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25537958 + ... + 25677023.

It is an arithmetic number, because the mean of its divisors is an integer number (459705678432).

Almost surely, 2^{3561131273873} is an apocalyptic number.

It is an amenable number.

3561131273873 is a deficient number, since it is larger than the sum of its proper divisors (116514153583).

3561131273873 is a wasteful number, since it uses less digits than its factorization.

3561131273873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51217255.

The product of its digits is 1905120, while the sum is 50.

The spelling of 3561131273873 in words is "three trillion, five hundred sixty-one billion, one hundred thirty-one million, two hundred seventy-three thousand, eight hundred seventy-three".