68751262687 has 16 divisors (see below), whose sum is σ = 70199117280. Its totient is φ = 67318566912.

The previous prime is 68751262651. The next prime is 68751262703. The reversal of 68751262687 is 78626215786.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68751262687 - 2²⁷ = 68617044959 is a prime.

It is a super-2 number, since 2×68751262687² (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 (68751262607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7166508 + ... + 7176094.

It is an arithmetic number, because the mean of its divisors is an integer number (4387444830).

Almost surely, 2^68751262687 is an apocalyptic number.

68751262687 is a deficient number, since it is larger than the sum of its proper divisors (1447854593).

68751262687 is a wasteful number, since it uses less digits than its factorization.

68751262687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362.

The product of its digits is 13547520, while the sum is 58.

The spelling of 68751262687 in words is "sixty-eight billion, seven hundred fifty-one million, two hundred sixty-two thousand, six hundred eighty-seven".