2447272643 has 2 divisors, whose sum is σ = 2447272644. Its totient is φ = 2447272642.

The previous prime is 2447272627. The next prime is 2447272669. The reversal of 2447272643 is 3462727442.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2447272643 - 2⁴ = 2447272627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2447272643.

It is not a weakly prime, because it can be changed into another prime (2447272693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223636321 + 1223636322.

It is an arithmetic number, because the mean of its divisors is an integer number (1223636322).

Almost surely, 2^2447272643 is an apocalyptic number.

2447272643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447272643 is an equidigital number, since it uses as much as digits as its factorization.

2447272643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 41.

The square root of 2447272643 is about 49469.9165453106. The cubic root of 2447272643 is about 1347.5993261517.

The spelling of 2447272643 in words is "two billion, four hundred forty-seven million, two hundred seventy-two thousand, six hundred forty-three".