2666131553 has 2 divisors, whose sum is σ = 2666131554. Its totient is φ = 2666131552.

The previous prime is 2666131493. The next prime is 2666131577. The reversal of 2666131553 is 3551316662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2410515409 + 255616144 = 49097^2 + 15988^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666131553 - 2¹⁶ = 2666066017 is a prime.

It is not a weakly prime, because it can be changed into another prime (2666131583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333065776 + 1333065777.

It is an arithmetic number, because the mean of its divisors is an integer number (1333065777).

Almost surely, 2^2666131553 is an apocalyptic number.

It is an amenable number.

2666131553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666131553 is an equidigital number, since it uses as much as digits as its factorization.

2666131553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 38.

The square root of 2666131553 is about 51634.5964736823. The cubic root of 2666131553 is about 1386.6297857227.

The spelling of 2666131553 in words is "two billion, six hundred sixty-six million, one hundred thirty-one thousand, five hundred fifty-three".