66784998292 has 24 divisors (see below), whose sum is σ = 117942918912. Its totient is φ = 33087196800.

The previous prime is 66784998283. The next prime is 66784998299. The reversal of 66784998292 is 29289948766.

66784998292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66784998299) 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, 1648317 + ... + 1688347.

It is an arithmetic number, because the mean of its divisors is an integer number (4914288288).

Almost surely, 2^66784998292 is an apocalyptic number.

It is an amenable number.

66784998292 is a deficient number, since it is larger than the sum of its proper divisors (51157920620).

66784998292 is a wasteful number, since it uses less digits than its factorization.

66784998292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43839 (or 43837 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 70.

The spelling of 66784998292 in words is "sixty-six billion, seven hundred eighty-four million, nine hundred ninety-eight thousand, two hundred ninety-two".