2666395013 has 2 divisors, whose sum is σ = 2666395014. Its totient is φ = 2666395012.

The previous prime is 2666394961. The next prime is 2666395019. The reversal of 2666395013 is 3105936662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1925629924 + 740765089 = 43882^2 + 27217^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666395013 - 2¹⁴ = 2666378629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666395019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333197506 + 1333197507.

It is an arithmetic number, because the mean of its divisors is an integer number (1333197507).

Almost surely, 2^2666395013 is an apocalyptic number.

It is an amenable number.

2666395013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666395013 is an equidigital number, since it uses as much as digits as its factorization.

2666395013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 2666395013 is about 51637.1476071249. The cubic root of 2666395013 is about 1386.6754585691.

The spelling of 2666395013 in words is "two billion, six hundred sixty-six million, three hundred ninety-five thousand, thirteen".