722402390709 has 12 divisors (see below), whose sum is σ = 1104850715436. Its totient is φ = 453272088192.

The previous prime is 722402390693. The next prime is 722402390729. The reversal of 722402390709 is 907093204227.

It can be written as a sum of positive squares in 2 ways, for example, as 521320100625 + 201082290084 = 722025^2 + 448422^2 .

It is not a de Polignac number, because 722402390709 - 2⁴ = 722402390693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722402390729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2360791974 + ... + 2360792279.

It is an arithmetic number, because the mean of its divisors is an integer number (92070892953).

Almost surely, 2^722402390709 is an apocalyptic number.

It is an amenable number.

722402390709 is a deficient number, since it is larger than the sum of its proper divisors (382448324727).

722402390709 is a wasteful number, since it uses less digits than its factorization.

722402390709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721584276 (or 4721584273 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

It can be divided in two parts, 722402 and 390709, that added together give a palindrome (1113111).

The spelling of 722402390709 in words is "seven hundred twenty-two billion, four hundred two million, three hundred ninety thousand, seven hundred nine".