68272045253 has 8 divisors (see below), whose sum is σ = 70692353400. Its totient is φ = 65856143808.

The previous prime is 68272045243. The next prime is 68272045307. The reversal of 68272045253 is 35254027286.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30325784449 + 37946260804 = 174143^2 + 194798^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68272045253 is a prime.

It is a super-2 number, since 2×68272045253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68272045223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070126 + ... + 1132127.

It is an arithmetic number, because the mean of its divisors is an integer number (8836544175).

Almost surely, 2^68272045253 is an apocalyptic number.

It is an amenable number.

68272045253 is a deficient number, since it is larger than the sum of its proper divisors (2420308147).

68272045253 is a wasteful number, since it uses less digits than its factorization.

68272045253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203351.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 68272045253 in words is "sixty-eight billion, two hundred seventy-two million, forty-five thousand, two hundred fifty-three".