722728255772 has 6 divisors (see below), whose sum is σ = 1264774447608. Its totient is φ = 361364127884.

The previous prime is 722728255771. The next prime is 722728255819. The reversal of 722728255772 is 277552827227.

It is a super-2 number, since 2×722728255772² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722728255771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90341031968 + ... + 90341031975.

It is an arithmetic number, because the mean of its divisors is an integer number (210795741268).

Almost surely, 2^722728255772 is an apocalyptic number.

It is an amenable number.

722728255772 is a deficient number, since it is larger than the sum of its proper divisors (542046191836).

722728255772 is a wasteful number, since it uses less digits than its factorization.

722728255772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180682063947 (or 180682063945 counting only the distinct ones).

The product of its digits is 15366400, while the sum is 56.

The spelling of 722728255772 in words is "seven hundred twenty-two billion, seven hundred twenty-eight million, two hundred fifty-five thousand, seven hundred seventy-two".