21611131046504 has 64 divisors (see below), whose sum is σ = 43406089660800. Its totient is φ = 10057332916224.

The previous prime is 21611131046503. The next prime is 21611131046507. The reversal of 21611131046504 is 40564013111612.

It is not an unprimeable number, because it can be changed into a prime (21611131046501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937532 + ... + 6640875.

It is an arithmetic number, because the mean of its divisors is an integer number (678220150950).

Almost surely, 2^{21611131046504} is an apocalyptic number.

It is an amenable number.

21611131046504 is an abundant number, since it is smaller than the sum of its proper divisors (21794958614296).

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

21611131046504 is a wasteful number, since it uses less digits than its factorization.

21611131046504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578762 (or 7578758 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 21611131046504 in words is "twenty-one trillion, six hundred eleven billion, one hundred thirty-one million, forty-six thousand, five hundred four".