68792009798891 has 2 divisors, whose sum is σ = 68792009798892. Its totient is φ = 68792009798890.

The previous prime is 68792009798807. The next prime is 68792009798933. The reversal of 68792009798891 is 19889790029786.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68792009798891 is a prime.

It is a super-2 number, since 2×68792009798891² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68792009794891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34396004899445 + 34396004899446.

It is an arithmetic number, because the mean of its divisors is an integer number (34396004899446).

Almost surely, 2^{68792009798891} is an apocalyptic number.

68792009798891 is a deficient number, since it is larger than the sum of its proper divisors (1).

68792009798891 is an equidigital number, since it uses as much as digits as its factorization.

68792009798891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975228416, while the sum is 83.

The spelling of 68792009798891 in words is "sixty-eight trillion, seven hundred ninety-two billion, nine million, seven hundred ninety-eight thousand, eight hundred ninety-one".