722115533545 has 24 divisors (see below), whose sum is σ = 1008574649928. Its totient is φ = 494889696000.

The previous prime is 722115533519. The next prime is 722115533561. The reversal of 722115533545 is 545335511227.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6697294569 + 715418238976 = 81837^2 + 845824^2 .

It is not a de Polignac number, because 722115533545 - 2⁷ = 722115533417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377026 + ... + 1259515.

It is an arithmetic number, because the mean of its divisors is an integer number (42023943747).

Almost surely, 2^722115533545 is an apocalyptic number.

It is an amenable number.

722115533545 is a deficient number, since it is larger than the sum of its proper divisors (286459116383).

722115533545 is a wasteful number, since it uses less digits than its factorization.

722115533545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638361 (or 1638354 counting only the distinct ones).

The product of its digits is 630000, while the sum is 43.

The spelling of 722115533545 in words is "seven hundred twenty-two billion, one hundred fifteen million, five hundred thirty-three thousand, five hundred forty-five".