3608874945985 has 4 divisors (see below), whose sum is σ = 4330649935188. Its totient is φ = 2887099956784.

The previous prime is 3608874945943. The next prime is 3608874945997. The reversal of 3608874945985 is 5895494788063.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2005217427249 + 1603657518736 = 1416057^2 + 1266356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3608874945985 is a prime.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 360887494594 + ... + 360887494603.

It is an arithmetic number, because the mean of its divisors is an integer number (1082662483797).

Almost surely, 2^{3608874945985} is an apocalyptic number.

It is an amenable number.

3608874945985 is a deficient number, since it is larger than the sum of its proper divisors (721774989203).

3608874945985 is an equidigital number, since it uses as much as digits as its factorization.

3608874945985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721774989202.

The product of its (nonzero) digits is 2090188800, while the sum is 76.

The spelling of 3608874945985 in words is "three trillion, six hundred eight billion, eight hundred seventy-four million, nine hundred forty-five thousand, nine hundred eighty-five".