21089148535056 has 80 divisors (see below), whose sum is σ = 62265299587200. Its totient is φ = 6025267866624.

The previous prime is 21089148535027. The next prime is 21089148535061. The reversal of 21089148535056 is 65053584198012.

It is a junction number, because it is equal to n+sod(n) for n = 21089148534987 and 21089148535005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9066910 + ... + 11152898.

It is an arithmetic number, because the mean of its divisors is an integer number (778316244840).

Almost surely, 2^{21089148535056} is an apocalyptic number.

It is an amenable number.

21089148535056 is an abundant number, since it is smaller than the sum of its proper divisors (41176151052144).

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

21089148535056 is a wasteful number, since it uses less digits than its factorization.

21089148535056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116096 (or 2116090 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 57.

The spelling of 21089148535056 in words is "twenty-one trillion, eighty-nine billion, one hundred forty-eight million, five hundred thirty-five thousand, fifty-six".