68451147851 has 8 divisors (see below), whose sum is σ = 70442082000. Its totient is φ = 66467629728.

The previous prime is 68451147827. The next prime is 68451147857. The reversal of 68451147851 is 15874115486.

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 68451147851 - 2³⁰ = 67377406027 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 68451147851.

It is not an unprimeable number, because it can be changed into a prime (68451147857) 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, 1835276 + ... + 1872201.

It is an arithmetic number, because the mean of its divisors is an integer number (8805260250).

Almost surely, 2^68451147851 is an apocalyptic number.

68451147851 is a deficient number, since it is larger than the sum of its proper divisors (1990934149).

68451147851 is a wasteful number, since it uses less digits than its factorization.

68451147851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708013.

The product of its digits is 1075200, while the sum is 50.

The spelling of 68451147851 in words is "sixty-eight billion, four hundred fifty-one million, one hundred forty-seven thousand, eight hundred fifty-one".