66734124801218 has 16 divisors (see below), whose sum is σ = 117061853472960. Its totient is φ = 27935215032816.

The previous prime is 66734124801173. The next prime is 66734124801263. The reversal of 66734124801218 is 81210842143766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66734124801173) and next prime (66734124801263).

It is a self number, because there is not a number n which added to its sum of digits gives 66734124801218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55427013353 + ... + 55427014556.

It is an arithmetic number, because the mean of its divisors is an integer number (7316365842060).

Almost surely, 2^{66734124801218} is an apocalyptic number.

66734124801218 is a deficient number, since it is larger than the sum of its proper divisors (50327728671742).

66734124801218 is a wasteful number, since it uses less digits than its factorization.

66734124801218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110854027961.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 66734124801218 in words is "sixty-six trillion, seven hundred thirty-four billion, one hundred twenty-four million, eight hundred one thousand, two hundred eighteen".