21304377050 has 48 divisors (see below), whose sum is σ = 45771391872. Its totient is φ = 7291334400.

The previous prime is 21304377043. The next prime is 21304377071. The reversal of 21304377050 is 5077340312.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21304376998 and 21304377016.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129922 + ... + 1148621.

It is an arithmetic number, because the mean of its divisors is an integer number (953570664).

Almost surely, 2^21304377050 is an apocalyptic number.

21304377050 is an abundant number, since it is smaller than the sum of its proper divisors (24467014822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21304377050 is a wasteful number, since it uses less digits than its factorization.

21304377050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278583 (or 2278578 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 21304377050 in words is "twenty-one billion, three hundred four million, three hundred seventy-seven thousand, fifty".