66998474094 has 8 divisors (see below), whose sum is σ = 133996948200. Its totient is φ = 22332824696.

The previous prime is 66998474093. The next prime is 66998474113. The reversal of 66998474094 is 49047489966.

It is a sphenic number, since it is the product of 3 distinct primes.

66998474094 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66998474093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5583206169 + ... + 5583206180.

It is an arithmetic number, because the mean of its divisors is an integer number (16749618525).

Almost surely, 2^66998474094 is an apocalyptic number.

66998474094 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66998474094 is a wasteful number, since it uses less digits than its factorization.

66998474094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166412354.

The product of its (nonzero) digits is 94058496, while the sum is 66.

The spelling of 66998474094 in words is "sixty-six billion, nine hundred ninety-eight million, four hundred seventy-four thousand, ninety-four".