68720001026 has 16 divisors (see below), whose sum is σ = 106528623768. Its totient is φ = 33225292800.

The previous prime is 68720001023. The next prime is 68720001071. The reversal of 68720001026 is 62010002786.

It is a Cunningham number, because it is equal to 262145²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 8278270225 + 60441730801 = 90985^2 + 245849^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68720000983 and 68720001001.

It is not an unprimeable number, because it can be changed into a prime (68720001023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3698915 + ... + 3717446.

Almost surely, 2^68720001026 is an apocalyptic number.

68720001026 is a deficient number, since it is larger than the sum of its proper divisors (37808622742).

68720001026 is a wasteful number, since it uses less digits than its factorization.

68720001026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416517.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 68720001026 in words is "sixty-eight billion, seven hundred twenty million, one thousand, twenty-six".