68266266291 has 24 divisors (see below), whose sum is σ = 108274171824. Its totient is φ = 42833733120.

The previous prime is 68266266253. The next prime is 68266266311. The reversal of 68266266291 is 19266266286.

It is a happy number.

68266266291 is a `hidden beast` number, since 6 + 8 + 2 + 6 + 6 + 2 + 6 + 629 + 1 = 666.

It is not a de Polignac number, because 68266266291 - 2²² = 68262071987 is a prime.

It is a super-2 number, since 2×68266266291² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68266266091) 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 23 ways as a sum of consecutive naturals, for example, 8258550 + ... + 8266811.

It is an arithmetic number, because the mean of its divisors is an integer number (4511423826).

Almost surely, 2^68266266291 is an apocalyptic number.

68266266291 is a deficient number, since it is larger than the sum of its proper divisors (40007905533).

68266266291 is a wasteful number, since it uses less digits than its factorization.

68266266291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16525393 (or 16525381 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 68266266291 in words is "sixty-eight billion, two hundred sixty-six million, two hundred sixty-six thousand, two hundred ninety-one".