68720555227 has 2 divisors, whose sum is σ = 68720555228. Its totient is φ = 68720555226.

The previous prime is 68720555209. The next prime is 68720555257. The reversal of 68720555227 is 72255502786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68720555227 - 2²⁷ = 68586337499 is a prime.

It is a super-3 number, since 3×68720555227³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (68720555257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34360277613 + 34360277614.

It is an arithmetic number, because the mean of its divisors is an integer number (34360277614).

Almost surely, 2^68720555227 is an apocalyptic number.

68720555227 is a deficient number, since it is larger than the sum of its proper divisors (1).

68720555227 is an equidigital number, since it uses as much as digits as its factorization.

68720555227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352000, while the sum is 49.

The spelling of 68720555227 in words is "sixty-eight billion, seven hundred twenty million, five hundred fifty-five thousand, two hundred twenty-seven".