665675167715513 has 32 divisors (see below), whose sum is σ = 688953876172416. Its totient is φ = 642900102893568.

The previous prime is 665675167715501. The next prime is 665675167715531. The reversal of 665675167715513 is 315517761576566.

It is not a de Polignac number, because 665675167715513 - 2³⁴ = 665657987846329 is a prime.

It is a super-2 number, since 2×665675167715513² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665675167715533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377603831 + ... + 379362627.

It is an arithmetic number, because the mean of its divisors is an integer number (21529808630388).

Almost surely, 2^{665675167715513} is an apocalyptic number.

It is an amenable number.

665675167715513 is a deficient number, since it is larger than the sum of its proper divisors (23278708456903).

665675167715513 is a wasteful number, since it uses less digits than its factorization.

665675167715513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759433.

The product of its digits is 833490000, while the sum is 71.

The spelling of 665675167715513 in words is "six hundred sixty-five trillion, six hundred seventy-five billion, one hundred sixty-seven million, seven hundred fifteen thousand, five hundred thirteen".