268135660785 has 32 divisors (see below), whose sum is σ = 433519257600. Its totient is φ = 141507995328.

The previous prime is 268135660777. The next prime is 268135660841. The reversal of 268135660785 is 587066531862.

It is not a de Polignac number, because 268135660785 - 2³ = 268135660777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1322616 + ... + 1511814.

It is an arithmetic number, because the mean of its divisors is an integer number (13547476800).

Almost surely, 2^268135660785 is an apocalyptic number.

It is an amenable number.

268135660785 is a deficient number, since it is larger than the sum of its proper divisors (165383596815).

268135660785 is a wasteful number, since it uses less digits than its factorization.

268135660785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190197.

The product of its (nonzero) digits is 14515200, while the sum is 57.

The spelling of 268135660785 in words is "two hundred sixty-eight billion, one hundred thirty-five million, six hundred sixty thousand, seven hundred eighty-five".