66734390854982 has 16 divisors (see below), whose sum is σ = 101990690529120. Its totient is φ = 32737498889472.

The previous prime is 66734390854981. The next prime is 66734390854997. The reversal of 66734390854982 is 28945809343766.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66734390854981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30035519 + ... + 32180757.

It is an arithmetic number, because the mean of its divisors is an integer number (6374418158070).

Almost surely, 2^{66734390854982} is an apocalyptic number.

66734390854982 is a deficient number, since it is larger than the sum of its proper divisors (35256299674138).

66734390854982 is a wasteful number, since it uses less digits than its factorization.

66734390854982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438767.

The product of its (nonzero) digits is 1881169920, while the sum is 74.

The spelling of 66734390854982 in words is "sixty-six trillion, seven hundred thirty-four billion, three hundred ninety million, eight hundred fifty-four thousand, nine hundred eighty-two".