3561645680331 has 16 divisors (see below), whose sum is σ = 4877293920000. Its totient is φ = 2310216195168.

The previous prime is 3561645680237. The next prime is 3561645680389. The reversal of 3561645680331 is 1330865461653.

It is not a de Polignac number, because 3561645680331 - 2³³ = 3553055745739 is a prime.

It is a super-2 number, since 2×3561645680331² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3561645681331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6910650 + ... + 7408128.

It is an arithmetic number, because the mean of its divisors is an integer number (304830870000).

Almost surely, 2^{3561645680331} is an apocalyptic number.

3561645680331 is a deficient number, since it is larger than the sum of its proper divisors (1315648239669).

3561645680331 is a wasteful number, since it uses less digits than its factorization.

3561645680331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562018.

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 3561645680331 in words is "three trillion, five hundred sixty-one billion, six hundred forty-five million, six hundred eighty thousand, three hundred thirty-one".