165614644646 has 8 divisors (see below), whose sum is σ = 271005782184. Its totient is φ = 75279383920.

The previous prime is 165614644633. The next prime is 165614644661. The reversal of 165614644646 is 646446416561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3763969175 + ... + 3763969218.

It is an arithmetic number, because the mean of its divisors is an integer number (33875722773).

Almost surely, 2^165614644646 is an apocalyptic number.

165614644646 is a deficient number, since it is larger than the sum of its proper divisors (105391137538).

165614644646 is a wasteful number, since it uses less digits than its factorization.

165614644646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527938406.

The product of its digits is 9953280, while the sum is 53.

The spelling of 165614644646 in words is "one hundred sixty-five billion, six hundred fourteen million, six hundred forty-four thousand, six hundred forty-six".