268136250309 has 24 divisors (see below), whose sum is σ = 388989661632. Its totient is φ = 177981598080.

The previous prime is 268136250299. The next prime is 268136250311. The reversal of 268136250309 is 903052631862.

268136250309 is a `hidden beast` number, since 2 + 6 + 8 + 13 + 625 + 0 + 3 + 0 + 9 = 666.

It is not a de Polignac number, because 268136250309 - 2¹³ = 268136242117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268136250359) 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 23 ways as a sum of consecutive naturals, for example, 16743184 + ... + 16759190.

It is an arithmetic number, because the mean of its divisors is an integer number (16207902568).

Almost surely, 2^268136250309 is an apocalyptic number.

It is an amenable number.

268136250309 is a deficient number, since it is larger than the sum of its proper divisors (120853411323).

268136250309 is a wasteful number, since it uses less digits than its factorization.

268136250309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23977 (or 23974 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 268136250309 in words is "two hundred sixty-eight billion, one hundred thirty-six million, two hundred fifty thousand, three hundred nine".