2666431423545 has 32 divisors (see below), whose sum is σ = 4272128179200. Its totient is φ = 1420151279040.

The previous prime is 2666431423543. The next prime is 2666431423583. The reversal of 2666431423545 is 5453241346662.

2666431423545 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2666431423545 - 2¹ = 2666431423543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2666431423541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174280306 + ... + 174295604.

It is an arithmetic number, because the mean of its divisors is an integer number (133504005600).

Almost surely, 2^{2666431423545} is an apocalyptic number.

It is an amenable number.

2666431423545 is a deficient number, since it is larger than the sum of its proper divisors (1605696755655).

2666431423545 is a wasteful number, since it uses less digits than its factorization.

2666431423545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30445.

The product of its digits is 12441600, while the sum is 51.

The spelling of 2666431423545 in words is "two trillion, six hundred sixty-six billion, four hundred thirty-one million, four hundred twenty-three thousand, five hundred forty-five".