3785478745873 has 12 divisors (see below), whose sum is σ = 4379892766480. Its totient is φ = 3260220927480.

The previous prime is 3785478745861. The next prime is 3785478745921.

3785478745873 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-3785478745873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3785478745873.

It is not an unprimeable number, because it can be changed into a prime (3785478745673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 823285815 + ... + 823290412.

Almost surely, 2^{3785478745873} is an apocalyptic number.

It is an amenable number.

3785478745873 is a deficient number, since it is larger than the sum of its proper divisors (594414020607).

3785478745873 is a wasteful number, since it uses less digits than its factorization.

3785478745873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646576268 (or 1646576257 counting only the distinct ones).

The product of its digits is 4425523200, while the sum is 76.

The spelling of 3785478745873 in words is "three trillion, seven hundred eighty-five billion, four hundred seventy-eight million, seven hundred forty-five thousand, eight hundred seventy-three".