2666264259787 has 2 divisors, whose sum is σ = 2666264259788. Its totient is φ = 2666264259786.

The previous prime is 2666264259727. The next prime is 2666264259829. The reversal of 2666264259787 is 7879524626662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2666264259787 - 2¹¹ = 2666264257739 is a prime.

It is not a weakly prime, because it can be changed into another prime (2666264259707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333132129893 + 1333132129894.

It is an arithmetic number, because the mean of its divisors is an integer number (1333132129894).

Almost surely, 2^{2666264259787} is an apocalyptic number.

2666264259787 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666264259787 is an equidigital number, since it uses as much as digits as its factorization.

2666264259787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 731566080, while the sum is 70.

The spelling of 2666264259787 in words is "two trillion, six hundred sixty-six billion, two hundred sixty-four million, two hundred fifty-nine thousand, seven hundred eighty-seven".