249872811097 has 32 divisors (see below), whose sum is σ = 310810026240. Its totient is φ = 195606455040.

The previous prime is 249872811079. The next prime is 249872811121. The reversal of 249872811097 is 790118278942.

It is a cyclic number.

It is not a de Polignac number, because 249872811097 - 2¹¹ = 249872809049 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (249872812097) 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 in 31 ways as a sum of consecutive naturals, for example, 3672447 + ... + 3739867.

It is an arithmetic number, because the mean of its divisors is an integer number (9712813320).

Almost surely, 2^249872811097 is an apocalyptic number.

It is an amenable number.

249872811097 is a deficient number, since it is larger than the sum of its proper divisors (60937215143).

249872811097 is a wasteful number, since it uses less digits than its factorization.

249872811097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67873.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The spelling of 249872811097 in words is "two hundred forty-nine billion, eight hundred seventy-two million, eight hundred eleven thousand, ninety-seven".