722395892816 has 120 divisors (see below), whose sum is σ = 1684394394984. Its totient is φ = 297284567040.

The previous prime is 722395892783. The next prime is 722395892819. The reversal of 722395892816 is 618298593227.

It can be written as a sum of positive squares in 4 ways, for example, as 39921638416 + 682474254400 = 199804^2 + 826120^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722395892819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 993536 + ... + 1559456.

Almost surely, 2^722395892816 is an apocalyptic number.

722395892816 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722395892816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842197197492).

722395892816 is an abundant number, since it is smaller than the sum of its proper divisors (961998502168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722395892816 is a wasteful number, since it uses less digits than its factorization.

722395892816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565997 (or 565972 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 62.

The spelling of 722395892816 in words is "seven hundred twenty-two billion, three hundred ninety-five million, eight hundred ninety-two thousand, eight hundred sixteen".