642316430627 has 2 divisors, whose sum is σ = 642316430628. Its totient is φ = 642316430626.

The previous prime is 642316430593. The next prime is 642316430663. The reversal of 642316430627 is 726034613246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642316430627 - 2¹⁶ = 642316365091 is a prime.

It is a super-2 number, since 2×642316430627² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (642316430527) 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, 321158215313 + 321158215314.

It is an arithmetic number, because the mean of its divisors is an integer number (321158215314).

Almost surely, 2^642316430627 is an apocalyptic number.

642316430627 is a deficient number, since it is larger than the sum of its proper divisors (1).

642316430627 is an equidigital number, since it uses as much as digits as its factorization.

642316430627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 642316430627 in words is "six hundred forty-two billion, three hundred sixteen million, four hundred thirty thousand, six hundred twenty-seven".