422973656551 has 2 divisors, whose sum is σ = 422973656552. Its totient is φ = 422973656550.

The previous prime is 422973656507. The next prime is 422973656557. The reversal of 422973656551 is 155656379224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422973656551 - 2¹⁷ = 422973525479 is a prime.

It is a super-2 number, since 2×422973656551² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 422973656492 and 422973656501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422973656557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211486828275 + 211486828276.

It is an arithmetic number, because the mean of its divisors is an integer number (211486828276).

Almost surely, 2^422973656551 is an apocalyptic number.

422973656551 is a deficient number, since it is larger than the sum of its proper divisors (1).

422973656551 is an equidigital number, since it uses as much as digits as its factorization.

422973656551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608000, while the sum is 55.

The spelling of 422973656551 in words is "four hundred twenty-two billion, nine hundred seventy-three million, six hundred fifty-six thousand, five hundred fifty-one".