66905442374 has 8 divisors (see below), whose sum is σ = 100359370488. Its totient is φ = 33452318880.

The previous prime is 66905442367. The next prime is 66905442379. The reversal of 66905442374 is 47324450966.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66905442379) 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, 92414 + ... + 377294.

It is an arithmetic number, because the mean of its divisors is an integer number (12544921311).

Almost surely, 2^66905442374 is an apocalyptic number.

66905442374 is a deficient number, since it is larger than the sum of its proper divisors (33453928114).

66905442374 is a wasteful number, since it uses less digits than its factorization.

66905442374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402310.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 66905442374 in words is "sixty-six billion, nine hundred five million, four hundred forty-two thousand, three hundred seventy-four".