253997728322 has 54 divisors (see below), whose sum is σ = 419054443353. Its totient is φ = 115412238864.

The previous prime is 253997728321. The next prime is 253997728349. The reversal of 253997728322 is 223827799352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 217175572441 + 36822155881 = 466021^2 + 191891^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=356369.

Its product of digits (22861440) is a multiple of the sum of its prime divisors (441).

It is not an unprimeable number, because it can be changed into a prime (253997728321) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 731981753 + ... + 731982099.

Almost surely, 2^253997728322 is an apocalyptic number.

253997728322 is a deficient number, since it is larger than the sum of its proper divisors (165056715031).

253997728322 is an frugal number, since it uses more digits than its factorization.

253997728322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 441 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 59.

The spelling of 253997728322 in words is "two hundred fifty-three billion, nine hundred ninety-seven million, seven hundred twenty-eight thousand, three hundred twenty-two".