68791338253 has 32 divisors (see below), whose sum is σ = 79936312320. Its totient is φ = 58506624000.

The previous prime is 68791338251. The next prime is 68791338263. The reversal of 68791338253 is 35283319786.

It is not a de Polignac number, because 68791338253 - 2¹ = 68791338251 is a prime.

It is a super-2 number, since 2×68791338253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68791338194 and 68791338203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68791338251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42436783 + ... + 42438403.

It is an arithmetic number, because the mean of its divisors is an integer number (2498009760).

Almost surely, 2^68791338253 is an apocalyptic number.

It is an amenable number.

68791338253 is a deficient number, since it is larger than the sum of its proper divisors (11144974067).

68791338253 is a wasteful number, since it uses less digits than its factorization.

68791338253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869.

The product of its digits is 6531840, while the sum is 55.

It can be divided in two parts, 68791 and 338253, that added together give a square (407044 = 638²).

The spelling of 68791338253 in words is "sixty-eight billion, seven hundred ninety-one million, three hundred thirty-eight thousand, two hundred fifty-three".