21536343330 has 32 divisors (see below), whose sum is σ = 51836203584. Its totient is φ = 5726471616.

The previous prime is 21536343289. The next prime is 21536343373. The reversal of 21536343330 is 3334363512.

It is a junction number, because it is equal to n+sod(n) for n = 21536343291 and 21536343300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023997 + ... + 1044816.

It is an arithmetic number, because the mean of its divisors is an integer number (1619881362).

Almost surely, 2^21536343330 is an apocalyptic number.

21536343330 is an abundant number, since it is smaller than the sum of its proper divisors (30299860254).

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

21536343330 is a wasteful number, since it uses less digits than its factorization.

21536343330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069170.

The product of its (nonzero) digits is 58320, while the sum is 33.

The spelling of 21536343330 in words is "twenty-one billion, five hundred thirty-six million, three hundred forty-three thousand, three hundred thirty".