2666431423433 has 2 divisors, whose sum is σ = 2666431423434. Its totient is φ = 2666431423432.

The previous prime is 2666431423417. The next prime is 2666431423477. The reversal of 2666431423433 is 3343241346662.

2666431423433 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2275910166544 + 390521256889 = 1508612^2 + 624917^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666431423433 - 2⁴ = 2666431423417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2666431428433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333215711716 + 1333215711717.

It is an arithmetic number, because the mean of its divisors is an integer number (1333215711717).

Almost surely, 2^{2666431423433} is an apocalyptic number.

It is an amenable number.

2666431423433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666431423433 is an equidigital number, since it uses as much as digits as its factorization.

2666431423433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 47.

The spelling of 2666431423433 in words is "two trillion, six hundred sixty-six billion, four hundred thirty-one million, four hundred twenty-three thousand, four hundred thirty-three".