68651667651 has 8 divisors (see below), whose sum is σ = 104612065024. Its totient is φ = 39229524360.

The previous prime is 68651667641. The next prime is 68651667653. The reversal of 68651667651 is 15676615686.

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

It is not a de Polignac number, because 68651667651 - 2¹³ = 68651659459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68651667591 and 68651667600.

It is not an unprimeable number, because it can be changed into a prime (68651667653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1634563495 + ... + 1634563536.

It is an arithmetic number, because the mean of its divisors is an integer number (13076508128).

Almost surely, 2^68651667651 is an apocalyptic number.

68651667651 is a deficient number, since it is larger than the sum of its proper divisors (35960397373).

68651667651 is a wasteful number, since it uses less digits than its factorization.

68651667651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269127041.

The product of its digits is 10886400, while the sum is 57.

The spelling of 68651667651 in words is "sixty-eight billion, six hundred fifty-one million, six hundred sixty-seven thousand, six hundred fifty-one".