2643265103447 has 2 divisors, whose sum is σ = 2643265103448. Its totient is φ = 2643265103446.

The previous prime is 2643265103429. The next prime is 2643265103461. The reversal of 2643265103447 is 7443015623462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2643265103447 - 2³⁸ = 2368387196503 is a prime.

It is a super-4 number, since 4×2643265103447⁴ (a number of 51 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643265103407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321632551723 + 1321632551724.

It is an arithmetic number, because the mean of its divisors is an integer number (1321632551724).

Almost surely, 2^{2643265103447} is an apocalyptic number.

2643265103447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643265103447 is an equidigital number, since it uses as much as digits as its factorization.

2643265103447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 47.

The spelling of 2643265103447 in words is "two trillion, six hundred forty-three billion, two hundred sixty-five million, one hundred three thousand, four hundred forty-seven".