249005865463 has 4 divisors (see below), whose sum is σ = 257038312768. Its totient is φ = 240973418160.

The previous prime is 249005865461. The next prime is 249005865503. The reversal of 249005865463 is 364568500942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249005865463 - 2¹ = 249005865461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249005865463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249005865461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4016223606 + ... + 4016223667.

It is an arithmetic number, because the mean of its divisors is an integer number (64259578192).

Almost surely, 2^249005865463 is an apocalyptic number.

249005865463 is a deficient number, since it is larger than the sum of its proper divisors (8032447305).

249005865463 is an equidigital number, since it uses as much as digits as its factorization.

249005865463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032447304.

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 249005865463 in words is "two hundred forty-nine billion, five million, eight hundred sixty-five thousand, four hundred sixty-three".