68421255127 has 2 divisors, whose sum is σ = 68421255128. Its totient is φ = 68421255126.

The previous prime is 68421255113. The next prime is 68421255139. The reversal of 68421255127 is 72155212486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68421255127 - 2²³ = 68412866519 is a prime.

It is a super-2 number, since 2×68421255127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68421265127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34210627563 + 34210627564.

It is an arithmetic number, because the mean of its divisors is an integer number (34210627564).

Almost surely, 2^68421255127 is an apocalyptic number.

68421255127 is a deficient number, since it is larger than the sum of its proper divisors (1).

68421255127 is an equidigital number, since it uses as much as digits as its factorization.

68421255127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 43.

The spelling of 68421255127 in words is "sixty-eight billion, four hundred twenty-one million, two hundred fifty-five thousand, one hundred twenty-seven".