66800814202 has 32 divisors (see below), whose sum is σ = 101515135680. Its totient is φ = 32966208000.

The previous prime is 66800814187. The next prime is 66800814209. The reversal of 66800814202 is 20241800866.

It is not an unprimeable number, because it can be changed into a prime (66800814209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30655549 + ... + 30657727.

It is an arithmetic number, because the mean of its divisors is an integer number (3172347990).

Almost surely, 2^66800814202 is an apocalyptic number.

66800814202 is a deficient number, since it is larger than the sum of its proper divisors (34714321478).

66800814202 is a wasteful number, since it uses less digits than its factorization.

66800814202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 66800814202 in words is "sixty-six billion, eight hundred million, eight hundred fourteen thousand, two hundred two".