2666315447 has 2 divisors, whose sum is σ = 2666315448. Its totient is φ = 2666315446.

The previous prime is 2666315417. The next prime is 2666315453. The reversal of 2666315447 is 7445136662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2666315447 - 2⁶ = 2666315383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2666315398 and 2666315407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666315417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333157723 + 1333157724.

It is an arithmetic number, because the mean of its divisors is an integer number (1333157724).

Almost surely, 2^2666315447 is an apocalyptic number.

2666315447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666315447 is an equidigital number, since it uses as much as digits as its factorization.

2666315447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 44.

The square root of 2666315447 is about 51636.3771676519. The cubic root of 2666315447 is about 1386.6616654994.

The spelling of 2666315447 in words is "two billion, six hundred sixty-six million, three hundred fifteen thousand, four hundred forty-seven".