268746772515 has 32 divisors (see below), whose sum is σ = 465495883776. Its totient is φ = 131613383040.

The previous prime is 268746772493. The next prime is 268746772517. The reversal of 268746772515 is 515277647862.

It is not a de Polignac number, because 268746772515 - 2¹⁹ = 268746248227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268746772517) 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, 3570579 + ... + 3645068.

It is an arithmetic number, because the mean of its divisors is an integer number (14546746368).

Almost surely, 2^268746772515 is an apocalyptic number.

268746772515 is a deficient number, since it is larger than the sum of its proper divisors (196749111261).

268746772515 is a wasteful number, since it uses less digits than its factorization.

268746772515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215859.

The product of its digits is 39513600, while the sum is 60.

The spelling of 268746772515 in words is "two hundred sixty-eight billion, seven hundred forty-six million, seven hundred seventy-two thousand, five hundred fifteen".