68974063181 has 4 divisors (see below), whose sum is σ = 69091566432. Its totient is φ = 68856559932.

The previous prime is 68974063141. The next prime is 68974063189. The reversal of 68974063181 is 18136047986.

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 a cyclic number.

It is not a de Polignac number, because 68974063181 - 2¹⁸ = 68973801037 is a prime.

It is a super-2 number, since 2×68974063181² (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 (68974063189) 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 3 ways as a sum of consecutive naturals, for example, 58750745 + ... + 58751918.

It is an arithmetic number, because the mean of its divisors is an integer number (17272891608).

Almost surely, 2^68974063181 is an apocalyptic number.

It is an amenable number.

68974063181 is a deficient number, since it is larger than the sum of its proper divisors (117503251).

68974063181 is a wasteful number, since it uses less digits than its factorization.

68974063181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117503250.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 68974063181 in words is "sixty-eight billion, nine hundred seventy-four million, sixty-three thousand, one hundred eighty-one".