66798484765158 has 32 divisors (see below), whose sum is σ = 140632192794240. Its totient is φ = 21093687774720.

The previous prime is 66798484765121. The next prime is 66798484765211. The reversal of 66798484765158 is 85156748489766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3681588 + ... + 12130583.

It is an arithmetic number, because the mean of its divisors is an integer number (4394756024820).

Almost surely, 2^{66798484765158} is an apocalyptic number.

66798484765158 is an abundant number, since it is smaller than the sum of its proper divisors (73833708029082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66798484765158 is a wasteful number, since it uses less digits than its factorization.

66798484765158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849252.

The product of its digits is 19508428800, while the sum is 84.

The spelling of 66798484765158 in words is "sixty-six trillion, seven hundred ninety-eight billion, four hundred eighty-four million, seven hundred sixty-five thousand, one hundred fifty-eight".