165972651005 has 8 divisors (see below), whose sum is σ = 227619635712. Its totient is φ = 113809817808.

The previous prime is 165972650993. The next prime is 165972651059. The reversal of 165972651005 is 500156279561.

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

It is a cyclic number.

It is not a de Polignac number, because 165972651005 - 2¹⁴ = 165972634621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2371037837 + ... + 2371037906.

It is an arithmetic number, because the mean of its divisors is an integer number (28452454464).

Almost surely, 2^165972651005 is an apocalyptic number.

It is an amenable number.

165972651005 is a deficient number, since it is larger than the sum of its proper divisors (61646984707).

165972651005 is an equidigital number, since it uses as much as digits as its factorization.

165972651005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742075755.

The product of its (nonzero) digits is 567000, while the sum is 47.

The spelling of 165972651005 in words is "one hundred sixty-five billion, nine hundred seventy-two million, six hundred fifty-one thousand, five".