268283319993 has 40 divisors (see below), whose sum is σ = 438672758216. Its totient is φ = 162390873600.

The previous prime is 268283319989. The next prime is 268283320021. The reversal of 268283319993 is 399913382862.

268283319993 is a `hidden beast` number, since 268 + 283 + 3 + 1 + 9 + 9 + 93 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2865675024 + 265417644969 = 53532^2 + 515187^2 .

It is not a de Polignac number, because 268283319993 - 2² = 268283319989 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 268283319993.

It is not an unprimeable number, because it can be changed into a prime (268283319973) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2024128 + ... + 2152593.

Almost surely, 2^268283319993 is an apocalyptic number.

It is an amenable number.

268283319993 is a deficient number, since it is larger than the sum of its proper divisors (170389438223).

268283319993 is a wasteful number, since it uses less digits than its factorization.

268283319993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176807 (or 4176798 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The spelling of 268283319993 in words is "two hundred sixty-eight billion, two hundred eighty-three million, three hundred nineteen thousand, nine hundred ninety-three".