68800221766 has 4 divisors (see below), whose sum is σ = 103200332652. Its totient is φ = 34400110882.

The previous prime is 68800221713. The next prime is 68800221767. The reversal of 68800221766 is 66712200886.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68800221767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17200055440 + ... + 17200055443.

It is an arithmetic number, because the mean of its divisors is an integer number (25800083163).

Almost surely, 2^68800221766 is an apocalyptic number.

68800221766 is a deficient number, since it is larger than the sum of its proper divisors (34400110886).

68800221766 is a wasteful number, since it uses less digits than its factorization.

68800221766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34400110885.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 68800221766 in words is "sixty-eight billion, eight hundred million, two hundred twenty-one thousand, seven hundred sixty-six".