723858068161 has 4 divisors (see below), whose sum is σ = 723860939952. Its totient is φ = 723855196372.

The previous prime is 723858068149. The next prime is 723858068173. The reversal of 723858068161 is 161860858327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (723858068149) and next prime (723858068173).

It is a cyclic number.

It is not a de Polignac number, because 723858068161 - 2⁷ = 723858068033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723858068561) 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, 1017091 + ... + 1575496.

It is an arithmetic number, because the mean of its divisors is an integer number (180965234988).

Almost surely, 2^723858068161 is an apocalyptic number.

It is an amenable number.

723858068161 is a deficient number, since it is larger than the sum of its proper divisors (2871791).

723858068161 is a wasteful number, since it uses less digits than its factorization.

723858068161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871790.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 723858068161 in words is "seven hundred twenty-three billion, eight hundred fifty-eight million, sixty-eight thousand, one hundred sixty-one".