21300879602 has 8 divisors (see below), whose sum is σ = 32065026012. Its totient is φ = 10612537600.

The previous prime is 21300879571. The next prime is 21300879629. The reversal of 21300879602 is 20697800312.

It can be written as a sum of positive squares in 2 ways, for example, as 19768078801 + 1532800801 = 140599^2 + 39151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18950399 + ... + 18951522.

Almost surely, 2^21300879602 is an apocalyptic number.

21300879602 is a deficient number, since it is larger than the sum of its proper divisors (10764146410).

21300879602 is a wasteful number, since it uses less digits than its factorization.

21300879602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37902204.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 21300879602 in words is "twenty-one billion, three hundred million, eight hundred seventy-nine thousand, six hundred two".