646422651363 has 8 divisors (see below), whose sum is σ = 861900676288. Its totient is φ = 430946530344.

The previous prime is 646422651307. The next prime is 646422651367. The reversal of 646422651363 is 363156224646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 646422651363 - 2⁹ = 646422650851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646422651367) 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 in 7 ways as a sum of consecutive naturals, for example, 821556 + ... + 1402782.

It is an arithmetic number, because the mean of its divisors is an integer number (107737584536).

Almost surely, 2^646422651363 is an apocalyptic number.

646422651363 is a deficient number, since it is larger than the sum of its proper divisors (215478024925).

646422651363 is a wasteful number, since it uses less digits than its factorization.

646422651363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951953.

The product of its digits is 3732480, while the sum is 48.

The spelling of 646422651363 in words is "six hundred forty-six billion, four hundred twenty-two million, six hundred fifty-one thousand, three hundred sixty-three".