68021120651 has 8 divisors (see below), whose sum is σ = 74407056384. Its totient is φ = 61668884520.

The previous prime is 68021120641. The next prime is 68021120653. The reversal of 68021120651 is 15602112086.

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 68021120651 - 2¹⁴ = 68021104267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68021120653) 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, 8420675 + ... + 8428748.

It is an arithmetic number, because the mean of its divisors is an integer number (9300882048).

Almost surely, 2^68021120651 is an apocalyptic number.

68021120651 is a deficient number, since it is larger than the sum of its proper divisors (6385935733).

68021120651 is a wasteful number, since it uses less digits than its factorization.

68021120651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16849801.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 68021120651 in words is "sixty-eight billion, twenty-one million, one hundred twenty thousand, six hundred fifty-one".