2547273643 has 2 divisors, whose sum is σ = 2547273644. Its totient is φ = 2547273642.

The previous prime is 2547273629. The next prime is 2547273649. The reversal of 2547273643 is 3463727452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2547273643 - 2¹³ = 2547265451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2547273643.

It is not a weakly prime, because it can be changed into another prime (2547273649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273636821 + 1273636822.

It is an arithmetic number, because the mean of its divisors is an integer number (1273636822).

Almost surely, 2^2547273643 is an apocalyptic number.

2547273643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2547273643 is an equidigital number, since it uses as much as digits as its factorization.

2547273643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 43.

The square root of 2547273643 is about 50470.5225156229. The cubic root of 2547273643 is about 1365.7101401311.

The spelling of 2547273643 in words is "two billion, five hundred forty-seven million, two hundred seventy-three thousand, six hundred forty-three".