66277439079 has 16 divisors (see below), whose sum is σ = 93645121248. Its totient is φ = 41551634432.

The previous prime is 66277439051. The next prime is 66277439087. The reversal of 66277439079 is 97093477266.

It is a cyclic number.

It is not a de Polignac number, because 66277439079 - 2⁷ = 66277438951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66277439029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471852 + ... + 595985.

It is an arithmetic number, because the mean of its divisors is an integer number (5852820078).

Almost surely, 2^66277439079 is an apocalyptic number.

66277439079 is a deficient number, since it is larger than the sum of its proper divisors (27367682169).

66277439079 is a wasteful number, since it uses less digits than its factorization.

66277439079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069074.

The product of its (nonzero) digits is 24004512, while the sum is 60.

The spelling of 66277439079 in words is "sixty-six billion, two hundred seventy-seven million, four hundred thirty-nine thousand, seventy-nine".