68806073021 has 8 divisors (see below), whose sum is σ = 78638349120. Its totient is φ = 58974506208.

The previous prime is 68806073009. The next prime is 68806073051. The reversal of 68806073021 is 12037060886.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68806073021 - 2⁶ = 68806072957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68806073021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68806073051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49985 + ... + 374313.

It is an arithmetic number, because the mean of its divisors is an integer number (9829793640).

Almost surely, 2^68806073021 is an apocalyptic number.

It is an amenable number.

68806073021 is a deficient number, since it is larger than the sum of its proper divisors (9832276099).

68806073021 is a wasteful number, since it uses less digits than its factorization.

68806073021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354643.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 68806073021 in words is "sixty-eight billion, eight hundred six million, seventy-three thousand, twenty-one".