249664300247 has 2 divisors, whose sum is σ = 249664300248. Its totient is φ = 249664300246.

The previous prime is 249664300199. The next prime is 249664300279. The reversal of 249664300247 is 742003466942.

249664300247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249664300247 - 2¹² = 249664296151 is a prime.

It is a super-2 number, since 2×249664300247² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249664300297) 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, 124832150123 + 124832150124.

It is an arithmetic number, because the mean of its divisors is an integer number (124832150124).

Almost surely, 2^249664300247 is an apocalyptic number.

249664300247 is a deficient number, since it is larger than the sum of its proper divisors (1).

249664300247 is an equidigital number, since it uses as much as digits as its factorization.

249664300247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 249664300247 in words is "two hundred forty-nine billion, six hundred sixty-four million, three hundred thousand, two hundred forty-seven".