665039467475 has 24 divisors (see below), whose sum is σ = 878719303008. Its totient is φ = 497546150400.

The previous prime is 665039467423. The next prime is 665039467487. The reversal of 665039467475 is 574764930566.

It is not a de Polignac number, because 665039467475 - 2¹⁰ = 665039466451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4916711 + ... + 5050160.

It is an arithmetic number, because the mean of its divisors is an integer number (36613304292).

Almost surely, 2^665039467475 is an apocalyptic number.

665039467475 is a deficient number, since it is larger than the sum of its proper divisors (213679835533).

665039467475 is a wasteful number, since it uses less digits than its factorization.

665039467475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9967055 (or 9967050 counting only the distinct ones).

The product of its (nonzero) digits is 114307200, while the sum is 62.

The spelling of 665039467475 in words is "six hundred sixty-five billion, thirty-nine million, four hundred sixty-seven thousand, four hundred seventy-five".