68752458381 has 4 divisors (see below), whose sum is σ = 91669944512. Its totient is φ = 45834972252.

The previous prime is 68752458373. The next prime is 68752458419. The reversal of 68752458381 is 18385425786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68752458381 - 2³ = 68752458373 is a prime.

It is a super-2 number, since 2×68752458381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68752458331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11458743061 + ... + 11458743066.

It is an arithmetic number, because the mean of its divisors is an integer number (22917486128).

Almost surely, 2^68752458381 is an apocalyptic number.

It is an amenable number.

68752458381 is a deficient number, since it is larger than the sum of its proper divisors (22917486131).

68752458381 is a wasteful number, since it uses less digits than its factorization.

68752458381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22917486130.

The product of its digits is 12902400, while the sum is 57.

The spelling of 68752458381 in words is "sixty-eight billion, seven hundred fifty-two million, four hundred fifty-eight thousand, three hundred eighty-one".