21300879603 has 4 divisors (see below), whose sum is σ = 28401172808. Its totient is φ = 14200586400.

The previous prime is 21300879571. The next prime is 21300879629. The reversal of 21300879603 is 30697800312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21300879603 - 2⁵ = 21300879571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300879673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550146598 + ... + 3550146603.

It is an arithmetic number, because the mean of its divisors is an integer number (7100293202).

Almost surely, 2^21300879603 is an apocalyptic number.

21300879603 is a deficient number, since it is larger than the sum of its proper divisors (7100293205).

21300879603 is an equidigital number, since it uses as much as digits as its factorization.

21300879603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100293204.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 21300879603 in words is "twenty-one billion, three hundred million, eight hundred seventy-nine thousand, six hundred three".