68171678451 has 12 divisors (see below), whose sum is σ = 98900206080. Its totient is φ = 45249322320.

The previous prime is 68171678447. The next prime is 68171678467. The reversal of 68171678451 is 15487617186.

68171678451 is a `hidden beast` number, since 68 + 1 + 71 + 67 + 8 + 451 = 666.

It is not a de Polignac number, because 68171678451 - 2² = 68171678447 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68171678401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16536435 + ... + 16540556.

It is an arithmetic number, because the mean of its divisors is an integer number (8241683840).

Almost surely, 2^68171678451 is an apocalyptic number.

68171678451 is a deficient number, since it is larger than the sum of its proper divisors (30728527629).

68171678451 is a wasteful number, since it uses less digits than its factorization.

68171678451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33077226 (or 33077223 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The spelling of 68171678451 in words is "sixty-eight billion, one hundred seventy-one million, six hundred seventy-eight thousand, four hundred fifty-one".