21301079504 has 40 divisors (see below), whose sum is σ = 41447034720. Its totient is φ = 10605168000.

The previous prime is 21301079489. The next prime is 21301079557. The reversal of 21301079504 is 40597010312.

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, 4248359 + ... + 4253369.

It is an arithmetic number, because the mean of its divisors is an integer number (1036175868).

Almost surely, 2^21301079504 is an apocalyptic number.

It is an amenable number.

21301079504 is a deficient number, since it is larger than the sum of its proper divisors (20145955216).

21301079504 is a wasteful number, since it uses less digits than its factorization.

21301079504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099 (or 6093 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

Adding to 21301079504 its reverse (40597010312), we get a palindrome (61898089816).

The spelling of 21301079504 in words is "twenty-one billion, three hundred one million, seventy-nine thousand, five hundred four".