50640634663 has 4 divisors (see below), whose sum is σ = 50712875928. Its totient is φ = 50568393400.

The previous prime is 50640634661. The next prime is 50640634673. The reversal of 50640634663 is 36643604605.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50640634663 - 2¹ = 50640634661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50640634661) 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 3 ways as a sum of consecutive naturals, for example, 36119581 + ... + 36120982.

It is an arithmetic number, because the mean of its divisors is an integer number (12678218982).

Almost surely, 2^50640634663 is an apocalyptic number.

50640634663 is a deficient number, since it is larger than the sum of its proper divisors (72241265).

50640634663 is an equidigital number, since it uses as much as digits as its factorization.

50640634663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72241264.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 50640634663 in words is "fifty billion, six hundred forty million, six hundred thirty-four thousand, six hundred sixty-three".