21003675404 has 24 divisors (see below), whose sum is σ = 37006583040. Its totient is φ = 10430424576.

The previous prime is 21003675397. The next prime is 21003675449. The reversal of 21003675404 is 40457630012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802204 + ... + 1813820.

It is an arithmetic number, because the mean of its divisors is an integer number (1541940960).

Almost surely, 2^21003675404 is an apocalyptic number.

It is an amenable number.

21003675404 is a deficient number, since it is larger than the sum of its proper divisors (16002907636).

21003675404 is a wasteful number, since it uses less digits than its factorization.

21003675404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14657 (or 14655 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 21003675404 in words is "twenty-one billion, three million, six hundred seventy-five thousand, four hundred four".