501100005644 has 12 divisors (see below), whose sum is σ = 1002200011344. Its totient is φ = 214757145264.

The previous prime is 501100005643. The next prime is 501100005667. The reversal of 501100005644 is 446500001105.

501100005644 is an admirable number.

It is a super-2 number, since 2×501100005644² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501100005643) 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, 8948214359 + ... + 8948214414.

It is an arithmetic number, because the mean of its divisors is an integer number (83516667612).

Almost surely, 2^501100005644 is an apocalyptic number.

It is an amenable number.

501100005644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501100005644 is a wasteful number, since it uses less digits than its factorization.

501100005644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17896428784 (or 17896428782 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 501100005644 its reverse (446500001105), we get a palindrome (947600006749).

The spelling of 501100005644 in words is "five hundred one billion, one hundred million, five thousand, six hundred forty-four".