21430752003 has 6 divisors (see below), whose sum is σ = 30955530684. Its totient is φ = 14287167996.

The previous prime is 21430751999. The next prime is 21430752017. The reversal of 21430752003 is 30025703412.

21430752003 is a `hidden beast` number, since 21 + 430 + 7 + 5 + 200 + 3 = 666.

It is not a de Polignac number, because 21430752003 - 2² = 21430751999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21430752043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1190597325 + ... + 1190597342.

It is an arithmetic number, because the mean of its divisors is an integer number (5159255114).

Almost surely, 2^21430752003 is an apocalyptic number.

21430752003 is a deficient number, since it is larger than the sum of its proper divisors (9524778681).

21430752003 is a wasteful number, since it uses less digits than its factorization.

21430752003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381194673 (or 2381194670 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The spelling of 21430752003 in words is "twenty-one billion, four hundred thirty million, seven hundred fifty-two thousand, three".