3645333491397 has 16 divisors (see below), whose sum is σ = 5345693633280. Its totient is φ = 2195552740032.

The previous prime is 3645333491383. The next prime is 3645333491407. The reversal of 3645333491397 is 7931943335463.

It is not a de Polignac number, because 3645333491397 - 2⁴ = 3645333491381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3645333491397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645333490397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994360822 + ... + 994364487.

It is an arithmetic number, because the mean of its divisors is an integer number (334105852080).

Almost surely, 2^{3645333491397} is an apocalyptic number.

It is an amenable number.

3645333491397 is a deficient number, since it is larger than the sum of its proper divisors (1700360141883).

3645333491397 is a wasteful number, since it uses less digits than its factorization.

3645333491397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988725372.

The product of its digits is 66134880, while the sum is 60.

The spelling of 3645333491397 in words is "three trillion, six hundred forty-five billion, three hundred thirty-three million, four hundred ninety-one thousand, three hundred ninety-seven".