723216333723421 has 8 divisors (see below), whose sum is σ = 734011397354144. Its totient is φ = 712421293327920.

The previous prime is 723216333723407. The next prime is 723216333723449. The reversal of 723216333723421 is 124327333612327.

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

It is a de Polignac number, because none of the positive numbers 2^k-723216333723421 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 (723216333723491) 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, 62933971 + ... + 73533103.

It is an arithmetic number, because the mean of its divisors is an integer number (91751424669268).

Almost surely, 2^{723216333723421} is an apocalyptic number.

It is an amenable number.

723216333723421 is a deficient number, since it is larger than the sum of its proper divisors (10795063630723).

723216333723421 is a wasteful number, since it uses less digits than its factorization.

723216333723421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11617611.

The product of its digits is 4572288, while the sum is 49.

The spelling of 723216333723421 in words is "seven hundred twenty-three trillion, two hundred sixteen billion, three hundred thirty-three million, seven hundred twenty-three thousand, four hundred twenty-one".