66773888334 has 48 divisors (see below), whose sum is σ = 146350668672. Its totient is φ = 22001235984.

The previous prime is 66773888303. The next prime is 66773888341. The reversal of 66773888334 is 43388837766.

It is a super-3 number, since 3×66773888334³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 981217 + ... + 1047059.

It is an arithmetic number, because the mean of its divisors is an integer number (3048972264).

Almost surely, 2^66773888334 is an apocalyptic number.

66773888334 is an abundant number, since it is smaller than the sum of its proper divisors (79576780338).

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

66773888334 is a wasteful number, since it uses less digits than its factorization.

66773888334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66501 (or 66498 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 63.

The spelling of 66773888334 in words is "sixty-six billion, seven hundred seventy-three million, eight hundred eighty-eight thousand, three hundred thirty-four".