1268936858457 has 96 divisors (see below), whose sum is σ = 2022641786880. Its totient is φ = 763943685120.

The previous prime is 1268936858419. The next prime is 1268936858459. The reversal of 1268936858457 is 7548586398621.

1268936858457 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 9 + 36 + 8 + 584 + 5 + 7 = 666.

It is not a de Polignac number, because 1268936858457 - 2³⁶ = 1200217381721 is a prime.

It is a super-2 number, since 2×1268936858457² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1268936858459) 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 95 ways as a sum of consecutive naturals, for example, 281171433 + ... + 281175945.

It is an arithmetic number, because the mean of its divisors is an integer number (21069185280).

Almost surely, 2^{1268936858457} is an apocalyptic number.

It is an amenable number.

1268936858457 is a deficient number, since it is larger than the sum of its proper divisors (753704928423).

1268936858457 is a wasteful number, since it uses less digits than its factorization.

1268936858457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635 (or 5632 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 72.

The spelling of 1268936858457 in words is "one trillion, two hundred sixty-eight billion, nine hundred thirty-six million, eight hundred fifty-eight thousand, four hundred fifty-seven".