3945799372615 has 16 divisors (see below), whose sum is σ = 4737245990400. Its totient is φ = 3155115332512.

The previous prime is 3945799372573. The next prime is 3945799372631. The reversal of 3945799372615 is 5162739975493.

It is a cyclic number.

It is not a de Polignac number, because 3945799372615 - 2¹⁷ = 3945799241543 is a prime.

It is a super-2 number, since 2×3945799372615² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135752574 + ... + 135781636.

It is an arithmetic number, because the mean of its divisors is an integer number (296077874400).

Almost surely, 2^{3945799372615} is an apocalyptic number.

3945799372615 is a deficient number, since it is larger than the sum of its proper divisors (791446617785).

3945799372615 is a wasteful number, since it uses less digits than its factorization.

3945799372615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41246.

The product of its digits is 385786800, while the sum is 70.

The spelling of 3945799372615 in words is "three trillion, nine hundred forty-five billion, seven hundred ninety-nine million, three hundred seventy-two thousand, six hundred fifteen".