3950002144645 has 16 divisors (see below), whose sum is σ = 4903591163760. Its totient is φ = 3050948888064.

The previous prime is 3950002144619. The next prime is 3950002144667. The reversal of 3950002144645 is 5464412000593.

It can be written as a sum of positive squares in 8 ways, for example, as 2381537601 + 3947620607044 = 48801^2 + 1986862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3950002144645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4949899 + ... + 5692231.

It is an arithmetic number, because the mean of its divisors is an integer number (306474447735).

Almost surely, 2^{3950002144645} is an apocalyptic number.

It is an amenable number.

3950002144645 is a deficient number, since it is larger than the sum of its proper divisors (953589019115).

3950002144645 is a wasteful number, since it uses less digits than its factorization.

3950002144645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779064.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 3950002144645 in words is "three trillion, nine hundred fifty billion, two million, one hundred forty-four thousand, six hundred forty-five".