268017431615 has 32 divisors (see below), whose sum is σ = 329619096576. Its totient is φ = 209115308160.

The previous prime is 268017431597. The next prime is 268017431621. The reversal of 268017431615 is 516134710862.

It is a Cunningham number, because it is equal to 517704²-1.

It is not a de Polignac number, because 268017431615 - 2¹² = 268017427519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 121659104 + ... + 121661306.

It is an arithmetic number, because the mean of its divisors is an integer number (10300596768).

Almost surely, 2^268017431615 is an apocalyptic number.

268017431615 is a deficient number, since it is larger than the sum of its proper divisors (61601664961).

268017431615 is a wasteful number, since it uses less digits than its factorization.

268017431615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 268017431615 in words is "two hundred sixty-eight billion, seventeen million, four hundred thirty-one thousand, six hundred fifteen".