722663322541 has 4 divisors (see below), whose sum is σ = 723617964412. Its totient is φ = 721708680672.

The previous prime is 722663322527. The next prime is 722663322559. The reversal of 722663322541 is 145223366227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 279686553316 + 442976769225 = 528854^2 + 665565^2 .

It is a cyclic number.

It is not a de Polignac number, because 722663322541 - 2¹⁵ = 722663289773 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 (722663323541) 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, 477319800 + ... + 477321313.

It is an arithmetic number, because the mean of its divisors is an integer number (180904491103).

Almost surely, 2^722663322541 is an apocalyptic number.

It is an amenable number.

722663322541 is a deficient number, since it is larger than the sum of its proper divisors (954641871).

722663322541 is an equidigital number, since it uses as much as digits as its factorization.

722663322541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954641870.

The product of its digits is 725760, while the sum is 43.

Adding to 722663322541 its reverse (145223366227), we get a palindrome (867886688768).

The spelling of 722663322541 in words is "seven hundred twenty-two billion, six hundred sixty-three million, three hundred twenty-two thousand, five hundred forty-one".