21030875038 has 16 divisors (see below), whose sum is σ = 32019079680. Its totient is φ = 10358947096.

The previous prime is 21030875029. The next prime is 21030875051. The reversal of 21030875038 is 83057803012.

It is a junction number, because it is equal to n+sod(n) for n = 21030874988 and 21030875006.

It is a congruent number.

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, 236206 + ... + 312817.

It is an arithmetic number, because the mean of its divisors is an integer number (2001192480).

Almost surely, 2^21030875038 is an apocalyptic number.

21030875038 is a deficient number, since it is larger than the sum of its proper divisors (10988204642).

21030875038 is a wasteful number, since it uses less digits than its factorization.

21030875038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549311.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 21030875038 in words is "twenty-one billion, thirty million, eight hundred seventy-five thousand, thirty-eight".