2669288332549 has 2 divisors, whose sum is σ = 2669288332550. Its totient is φ = 2669288332548.

The previous prime is 2669288332547. The next prime is 2669288332567. The reversal of 2669288332549 is 9452338829662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2168226800100 + 501061532449 = 1472490^2 + 707857^2 .

It is a cyclic number.

It is not a de Polignac number, because 2669288332549 - 2¹ = 2669288332547 is a prime.

Together with 2669288332547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2669288332547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334644166274 + 1334644166275.

It is an arithmetic number, because the mean of its divisors is an integer number (1334644166275).

Almost surely, 2^{2669288332549} is an apocalyptic number.

It is an amenable number.

2669288332549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2669288332549 is an equidigital number, since it uses as much as digits as its factorization.

2669288332549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268738560, while the sum is 67.

The spelling of 2669288332549 in words is "two trillion, six hundred sixty-nine billion, two hundred eighty-eight million, three hundred thirty-two thousand, five hundred forty-nine".