249029356280896 has 21 divisors (see below), whose sum is σ = 494167879388071. Its totient is φ = 124514615017792.

The previous prime is 249029356280893. The next prime is 249029356280897. The reversal of 249029356280896 is 698082653920942.

The square root of 249029356280896 is 15780664.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249029356280891) 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 in 2 ways as a sum of consecutive naturals, for example, 125259021 + ... + 127231603.

Almost surely, 2^{249029356280896} is an apocalyptic number.

249029356280896 is the 15780664-th square number.

It is an amenable number.

249029356280896 is a deficient number, since it is larger than the sum of its proper divisors (245138523107175).

249029356280896 is an frugal number, since it uses more digits than its factorization.

249029356280896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945178 (or 1972585 counting only the distinct ones).

The product of its (nonzero) digits is 806215680, while the sum is 73.

The spelling of 249029356280896 in words is "two hundred forty-nine trillion, twenty-nine billion, three hundred fifty-six million, two hundred eighty thousand, eight hundred ninety-six".