68800051 has 2 divisors, whose sum is σ = 68800052. Its totient is φ = 68800050.

The previous prime is 68800049. The next prime is 68800079. The reversal of 68800051 is 15000886.

It is a happy number.

It is an a-pointer prime, because the next prime (68800079) can be obtained adding 68800051 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68800051 - 2¹ = 68800049 is a prime.

Together with 68800049, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 68799992 and 68800019.

It is not a weakly prime, because it can be changed into another prime (68300051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34400025 + 34400026.

It is an arithmetic number, because the mean of its divisors is an integer number (34400026).

Almost surely, 2^68800051 is an apocalyptic number.

68800051 is a deficient number, since it is larger than the sum of its proper divisors (1).

68800051 is an equidigital number, since it uses as much as digits as its factorization.

68800051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 68800051 is about 8294.5796156285. The cubic root of 68800051 is about 409.7600241524.

The spelling of 68800051 in words is "sixty-eight million, eight hundred thousand, fifty-one".