3581331874665 has 32 divisors (see below), whose sum is σ = 5796553104000. Its totient is φ = 1887918067200.

The previous prime is 3581331874663. The next prime is 3581331874721. The reversal of 3581331874665 is 5664781331853.

It is not a de Polignac number, because 3581331874665 - 2¹ = 3581331874663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3581331874599 and 3581331874608.

It is not an unprimeable number, because it can be changed into a prime (3581331874663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3335611 + ... + 4276559.

It is an arithmetic number, because the mean of its divisors is an integer number (181142284500).

Almost surely, 2^{3581331874665} is an apocalyptic number.

It is an amenable number.

3581331874665 is a deficient number, since it is larger than the sum of its proper divisors (2215221229335).

3581331874665 is a wasteful number, since it uses less digits than its factorization.

3581331874665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943897.

The product of its digits is 43545600, while the sum is 60.

The spelling of 3581331874665 in words is "three trillion, five hundred eighty-one billion, three hundred thirty-one million, eight hundred seventy-four thousand, six hundred sixty-five".