451228668571 has 2 divisors, whose sum is σ = 451228668572. Its totient is φ = 451228668570.

The previous prime is 451228668563. The next prime is 451228668587. The reversal of 451228668571 is 175866822154.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 451228668571 - 2³ = 451228668563 is a prime.

It is a super-2 number, since 2×451228668571² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (451228668971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225614334285 + 225614334286.

It is an arithmetic number, because the mean of its divisors is an integer number (225614334286).

Almost surely, 2^451228668571 is an apocalyptic number.

451228668571 is a deficient number, since it is larger than the sum of its proper divisors (1).

451228668571 is an equidigital number, since it uses as much as digits as its factorization.

451228668571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6451200, while the sum is 55.

The spelling of 451228668571 in words is "four hundred fifty-one billion, two hundred twenty-eight million, six hundred sixty-eight thousand, five hundred seventy-one".