165002638579 has 4 divisors (see below), whose sum is σ = 165003814800. Its totient is φ = 165001462360.

The previous prime is 165002638531. The next prime is 165002638589. The reversal of 165002638579 is 975836200561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165002638579 - 2¹⁷ = 165002507507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165002638589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343879 + ... + 669520.

It is an arithmetic number, because the mean of its divisors is an integer number (41250953700).

Almost surely, 2^165002638579 is an apocalyptic number.

165002638579 is a deficient number, since it is larger than the sum of its proper divisors (1176221).

165002638579 is a wasteful number, since it uses less digits than its factorization.

165002638579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176220.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 165002638579 in words is "one hundred sixty-five billion, two million, six hundred thirty-eight thousand, five hundred seventy-nine".