3665121431674 has 4 divisors (see below), whose sum is σ = 5497682147514. Its totient is φ = 1832560715836.

The previous prime is 3665121431659. The next prime is 3665121431683. The reversal of 3665121431674 is 4761341215663.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2957660446225 + 707460985449 = 1719785^2 + 841107^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 916280357917 + ... + 916280357920.

Almost surely, 2^{3665121431674} is an apocalyptic number.

3665121431674 is a deficient number, since it is larger than the sum of its proper divisors (1832560715840).

3665121431674 is a wasteful number, since it uses less digits than its factorization.

3665121431674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832560715839.

The product of its digits is 2177280, while the sum is 49.

The spelling of 3665121431674 in words is "three trillion, six hundred sixty-five billion, one hundred twenty-one million, four hundred thirty-one thousand, six hundred seventy-four".