3166731245561 has 8 divisors (see below), whose sum is σ = 3416319507720. Its totient is φ = 2917999204992.

The previous prime is 3166731245501. The next prime is 3166731245563. The reversal of 3166731245561 is 1655421376613.

It can be written as a sum of positive squares in 4 ways, for example, as 205974376336 + 2960756869225 = 453844^2 + 1720685^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3166731245561 is a prime.

It is a super-2 number, since 2×3166731245561² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3166731245563) 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, 214047710 + ... + 214062503.

It is an arithmetic number, because the mean of its divisors is an integer number (427039938465).

Almost surely, 2^{3166731245561} is an apocalyptic number.

It is an amenable number.

3166731245561 is a deficient number, since it is larger than the sum of its proper divisors (249588262159).

3166731245561 is a wasteful number, since it uses less digits than its factorization.

3166731245561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428110795.

The product of its digits is 2721600, while the sum is 50.

The spelling of 3166731245561 in words is "three trillion, one hundred sixty-six billion, seven hundred thirty-one million, two hundred forty-five thousand, five hundred sixty-one".