646422651367 has 2 divisors, whose sum is σ = 646422651368. Its totient is φ = 646422651366.

The previous prime is 646422651307. The next prime is 646422651401. The reversal of 646422651367 is 763156224646.

646422651367 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 646422651367 - 2³¹ = 644275167719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646422651307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323211325683 + 323211325684.

It is an arithmetic number, because the mean of its divisors is an integer number (323211325684).

Almost surely, 2^646422651367 is an apocalyptic number.

646422651367 is a deficient number, since it is larger than the sum of its proper divisors (1).

646422651367 is an equidigital number, since it uses as much as digits as its factorization.

646422651367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 52.

The spelling of 646422651367 in words is "six hundred forty-six billion, four hundred twenty-two million, six hundred fifty-one thousand, three hundred sixty-seven".