2666405141 has 2 divisors, whose sum is σ = 2666405142. Its totient is φ = 2666405140.

The previous prime is 2666405083. The next prime is 2666405177. The reversal of 2666405141 is 1415046662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2586231025 + 80174116 = 50855^2 + 8954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666405141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666405191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333202570 + 1333202571.

It is an arithmetic number, because the mean of its divisors is an integer number (1333202571).

Almost surely, 2^2666405141 is an apocalyptic number.

It is an amenable number.

2666405141 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666405141 is an equidigital number, since it uses as much as digits as its factorization.

2666405141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 2666405141 is about 51637.2456759653. The cubic root of 2666405141 is about 1386.6772142768.

The spelling of 2666405141 in words is "two billion, six hundred sixty-six million, four hundred five thousand, one hundred forty-one".