723166661327 has 16 divisors (see below), whose sum is σ = 817602315264. Its totient is φ = 633682200000.

The previous prime is 723166661299. The next prime is 723166661359.

723166661327 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 723166661327 - 2¹² = 723166657231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723166661827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4138958 + ... + 4310139.

It is an arithmetic number, because the mean of its divisors is an integer number (51100144704).

Almost surely, 2^723166661327 is an apocalyptic number.

723166661327 is a deficient number, since it is larger than the sum of its proper divisors (94435653937).

723166661327 is a wasteful number, since it uses less digits than its factorization.

723166661327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8449390.

The product of its digits is 2286144, while the sum is 50.

The spelling of 723166661327 in words is "seven hundred twenty-three billion, one hundred sixty-six million, six hundred sixty-one thousand, three hundred twenty-seven".