722728255744 has 36 divisors (see below), whose sum is σ = 1573781847120. Its totient is φ = 328512842240.

The previous prime is 722728255723. The next prime is 722728255751. The reversal of 722728255744 is 447552827227.

It is a super-2 number, since 2×722728255744² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128322514 + ... + 128328145.

It is an arithmetic number, because the mean of its divisors is an integer number (43716162420).

Almost surely, 2^722728255744 is an apocalyptic number.

It is an amenable number.

722728255744 is an abundant number, since it is smaller than the sum of its proper divisors (851053591376).

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

722728255744 is a wasteful number, since it uses less digits than its factorization.

722728255744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256650686 (or 256650672 counting only the distinct ones).

The product of its digits is 17561600, while the sum is 55.

The spelling of 722728255744 in words is "seven hundred twenty-two billion, seven hundred twenty-eight million, two hundred fifty-five thousand, seven hundred forty-four".