66777443374 has 8 divisors (see below), whose sum is σ = 100167312168. Its totient is φ = 33388339320.

The previous prime is 66777443329. The next prime is 66777443399. The reversal of 66777443374 is 47334477766.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146184 + ... + 393604.

It is an arithmetic number, because the mean of its divisors is an integer number (12520914021).

Almost surely, 2^66777443374 is an apocalyptic number.

66777443374 is a deficient number, since it is larger than the sum of its proper divisors (33389868794).

66777443374 is a wasteful number, since it uses less digits than its factorization.

66777443374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382370.

The product of its digits is 49787136, while the sum is 58.

The spelling of 66777443374 in words is "sixty-six billion, seven hundred seventy-seven million, four hundred forty-three thousand, three hundred seventy-four".