68818455651 has 8 divisors (see below), whose sum is σ = 100099571904. Its totient is φ = 41708154920.

The previous prime is 68818455619. The next prime is 68818455689. The reversal of 68818455651 is 15655481886.

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 68818455651 - 2⁵ = 68818455619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68818455591 and 68818455600.

It is not an unprimeable number, because it can be changed into a prime (68818455851) 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, 1042703841 + ... + 1042703906.

It is an arithmetic number, because the mean of its divisors is an integer number (12512446488).

Almost surely, 2^68818455651 is an apocalyptic number.

68818455651 is a deficient number, since it is larger than the sum of its proper divisors (31281116253).

68818455651 is a wasteful number, since it uses less digits than its factorization.

68818455651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085407761.

The product of its digits is 9216000, while the sum is 57.

The spelling of 68818455651 in words is "sixty-eight billion, eight hundred eighteen million, four hundred fifty-five thousand, six hundred fifty-one".