165347426723 has 4 divisors (see below), whose sum is σ = 175073745960. Its totient is φ = 155621107488.

The previous prime is 165347426701. The next prime is 165347426731. The reversal of 165347426723 is 327624743561.

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 165347426723 - 2⁶ = 165347426659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165347426423) 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, 4863159593 + ... + 4863159626.

It is an arithmetic number, because the mean of its divisors is an integer number (43768436490).

Almost surely, 2^165347426723 is an apocalyptic number.

165347426723 is a deficient number, since it is larger than the sum of its proper divisors (9726319237).

165347426723 is an equidigital number, since it uses as much as digits as its factorization.

165347426723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9726319236.

The product of its digits is 5080320, while the sum is 50.

The spelling of 165347426723 in words is "one hundred sixty-five billion, three hundred forty-seven million, four hundred twenty-six thousand, seven hundred twenty-three".