21013383003684 has 48 divisors (see below), whose sum is σ = 49051379135808. Its totient is φ = 7001582709888.

The previous prime is 21013383003647. The next prime is 21013383003689. The reversal of 21013383003684 is 48630038331012.

It is not an unprimeable number, because it can be changed into a prime (21013383003689) 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, 339919962 + ... + 339981774.

It is an arithmetic number, because the mean of its divisors is an integer number (1021903731996).

Almost surely, 2^{21013383003684} is an apocalyptic number.

It is an amenable number.

21013383003684 is an abundant number, since it is smaller than the sum of its proper divisors (28037996132124).

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

21013383003684 is a wasteful number, since it uses less digits than its factorization.

21013383003684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73004 (or 73002 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 21013383003684 in words is "twenty-one trillion, thirteen billion, three hundred eighty-three million, three thousand, six hundred eighty-four".