722362352821 has 16 divisors (see below), whose sum is σ = 767830834800. Its totient is φ = 678282329088.

The previous prime is 722362352797. The next prime is 722362352839. The reversal of 722362352821 is 128253263227.

It can be written as a sum of positive squares in 8 ways, for example, as 71871711921 + 650490640900 = 268089^2 + 806530^2 .

It is a cyclic number.

It is not a de Polignac number, because 722362352821 - 2³¹ = 720214869173 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 (722362352221) 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, 2126311 + ... + 2442523.

It is an arithmetic number, because the mean of its divisors is an integer number (47989427175).

Almost surely, 2^722362352821 is an apocalyptic number.

It is an amenable number.

722362352821 is a deficient number, since it is larger than the sum of its proper divisors (45468481979).

722362352821 is a wasteful number, since it uses less digits than its factorization.

722362352821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318408.

The product of its digits is 483840, while the sum is 43.

The spelling of 722362352821 in words is "seven hundred twenty-two billion, three hundred sixty-two million, three hundred fifty-two thousand, eight hundred twenty-one".