249195080815396 has 9 divisors (see below), whose sum is σ = 436091446677649. Its totient is φ = 124597524621784.

The previous prime is 249195080815361. The next prime is 249195080815441. The reversal of 249195080815396 is 693518080591942.

The square root of 249195080815396 is 15785914.

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

It can be written as a sum of positive squares in only one way, i.e., 246761056476900 + 2434024338496 = 15708630^2 + 1560136^2 .

It is a Duffinian number.

It is an unprimeable number.

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 in 2 ways as a sum of consecutive naturals, for example, 27625350 + ... + 35518306.

Almost surely, 2^{249195080815396} is an apocalyptic number.

249195080815396 is the 15785914-th square number.

It is an amenable number.

249195080815396 is a deficient number, since it is larger than the sum of its proper divisors (186896365862253).

249195080815396 is an frugal number, since it uses more digits than its factorization.

249195080815396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15785918 (or 7892959 counting only the distinct ones).

The product of its (nonzero) digits is 167961600, while the sum is 70.

The spelling of 249195080815396 in words is "two hundred forty-nine trillion, one hundred ninety-five billion, eighty million, eight hundred fifteen thousand, three hundred ninety-six".