666404623233077 has 8 divisors (see below), whose sum is σ = 704541775888800. Its totient is φ = 628573793089104.

The previous prime is 666404623233073. The next prime is 666404623233091. The reversal of 666404623233077 is 770332326404666.

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

It is not a de Polignac number, because 666404623233077 - 2² = 666404623233073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666404623233071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76580623463 + ... + 76580632164.

It is an arithmetic number, because the mean of its divisors is an integer number (88067721986100).

Almost surely, 2^{666404623233077} is an apocalyptic number.

It is an amenable number.

666404623233077 is a deficient number, since it is larger than the sum of its proper divisors (38137152655723).

666404623233077 is a wasteful number, since it uses less digits than its factorization.

666404623233077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153161255875.

The product of its (nonzero) digits is 109734912, while the sum is 59.

The spelling of 666404623233077 in words is "six hundred sixty-six trillion, four hundred four billion, six hundred twenty-three million, two hundred thirty-three thousand, seventy-seven".