3998765154332 has 12 divisors (see below), whose sum is σ = 7536134329416. Its totient is φ = 1845583917360.

The previous prime is 3998765154311. The next prime is 3998765154379. The reversal of 3998765154332 is 2334515678993.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38449664894 + ... + 38449664997.

It is an arithmetic number, because the mean of its divisors is an integer number (628011194118).

Almost surely, 2^{3998765154332} is an apocalyptic number.

It is an amenable number.

3998765154332 is a deficient number, since it is larger than the sum of its proper divisors (3537369175084).

3998765154332 is a wasteful number, since it uses less digits than its factorization.

3998765154332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76899329908 (or 76899329906 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 65.

The spelling of 3998765154332 in words is "three trillion, nine hundred ninety-eight billion, seven hundred sixty-five million, one hundred fifty-four thousand, three hundred thirty-two".