68657088651 has 8 divisors (see below), whose sum is σ = 93270007440. Its totient is φ = 44907781152.

The previous prime is 68657088631. The next prime is 68657088691. The reversal of 68657088651 is 15688075686.

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

It is not a de Polignac number, because 68657088651 - 2⁷ = 68657088523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68657088611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215902636 + ... + 215902953.

It is an arithmetic number, because the mean of its divisors is an integer number (11658750930).

Almost surely, 2^68657088651 is an apocalyptic number.

68657088651 is a deficient number, since it is larger than the sum of its proper divisors (24612918789).

68657088651 is a wasteful number, since it uses less digits than its factorization.

68657088651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431805645.

The product of its (nonzero) digits is 19353600, while the sum is 60.

The spelling of 68657088651 in words is "sixty-eight billion, six hundred fifty-seven million, eighty-eight thousand, six hundred fifty-one".