249775255553167 has 4 divisors (see below), whose sum is σ = 249781087514920. Its totient is φ = 249769423591416.

The previous prime is 249775255553141. The next prime is 249775255553207. The reversal of 249775255553167 is 761355552577942.

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 249775255553167 - 2³⁵ = 249740895814799 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 249775255553167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249775255553267) 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 3 ways as a sum of consecutive naturals, for example, 2915916633 + ... + 2916002290.

It is an arithmetic number, because the mean of its divisors is an integer number (62445271878730).

Almost surely, 2^{249775255553167} is an apocalyptic number.

249775255553167 is a deficient number, since it is larger than the sum of its proper divisors (5831961753).

249775255553167 is an equidigital number, since it uses as much as digits as its factorization.

249775255553167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831961752.

The product of its digits is 2778300000, while the sum is 73.

The spelling of 249775255553167 in words is "two hundred forty-nine trillion, seven hundred seventy-five billion, two hundred fifty-five million, five hundred fifty-three thousand, one hundred sixty-seven".