21603223633730 has 64 divisors (see below), whose sum is σ = 39301558732800. Its totient is φ = 8549188838400.

The previous prime is 21603223633669. The next prime is 21603223633759. The reversal of 21603223633730 is 3733632230612.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3104353991 + ... + 3104360949.

It is an arithmetic number, because the mean of its divisors is an integer number (614086855200).

Almost surely, 2^{21603223633730} is an apocalyptic number.

21603223633730 is a deficient number, since it is larger than the sum of its proper divisors (17698335099070).

21603223633730 is a wasteful number, since it uses less digits than its factorization.

21603223633730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11699.

The product of its (nonzero) digits is 489888, while the sum is 41.

The spelling of 21603223633730 in words is "twenty-one trillion, six hundred three billion, two hundred twenty-three million, six hundred thirty-three thousand, seven hundred thirty".