10165721723 has 8 divisors (see below), whose sum is σ = 10609307808. Its totient is φ = 9722268864.

The previous prime is 10165721701. The next prime is 10165721749. The reversal of 10165721723 is 32712756101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10165721723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10165721123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142415 + ... + 201527.

It is an arithmetic number, because the mean of its divisors is an integer number (1326163476).

Almost surely, 2^10165721723 is an apocalyptic number.

10165721723 is a deficient number, since it is larger than the sum of its proper divisors (443586085).

10165721723 is an equidigital number, since it uses as much as digits as its factorization.

10165721723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66613.

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 10165721723 in words is "ten billion, one hundred sixty-five million, seven hundred twenty-one thousand, seven hundred twenty-three".