581945715122 has 54 divisors (see below), whose sum is σ = 934222312863. Its totient is φ = 271854229944.

The previous prime is 581945715121. The next prime is 581945715137. The reversal of 581945715122 is 221517549185.

It can be written as a sum of positive squares in only one way, i.e., 290972857561 + 290972857561 = 539419^2 + 539419^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=539419.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (581945715121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1166223629 + ... + 1166224127.

Almost surely, 2^581945715122 is an apocalyptic number.

581945715122 is a deficient number, since it is larger than the sum of its proper divisors (352276597741).

581945715122 is an frugal number, since it uses more digits than its factorization.

581945715122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 571 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 50.

Multiplying 581945715122 by its sum of digits (50), we get a square (29097285756100 = 5394190²).

The spelling of 581945715122 in words is "five hundred eighty-one billion, nine hundred forty-five million, seven hundred fifteen thousand, one hundred twenty-two".