21536307104 has 48 divisors (see below), whose sum is σ = 47134080000. Its totient is φ = 9619188480.

The previous prime is 21536307059. The next prime is 21536307113. The reversal of 21536307104 is 40170363512.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 7 ways as a sum of consecutive naturals, for example, 822104 + ... + 847895.

It is an arithmetic number, because the mean of its divisors is an integer number (981960000).

Almost surely, 2^21536307104 is an apocalyptic number.

It is an amenable number.

21536307104 is an abundant number, since it is smaller than the sum of its proper divisors (25597772896).

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

21536307104 is a wasteful number, since it uses less digits than its factorization.

21536307104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670053 (or 1670045 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 21536307104 in words is "twenty-one billion, five hundred thirty-six million, three hundred seven thousand, one hundred four".