21877340324 has 24 divisors (see below), whose sum is σ = 46328486400. Its totient is φ = 8824473216.

The previous prime is 21877340293. The next prime is 21877340377. The reversal of 21877340324 is 42304377812.

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, 22979924 + ... + 22980875.

It is an arithmetic number, because the mean of its divisors is an integer number (1930353600).

Almost surely, 2^21877340324 is an apocalyptic number.

It is an amenable number.

21877340324 is an abundant number, since it is smaller than the sum of its proper divisors (24451146076).

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

21877340324 is a wasteful number, since it uses less digits than its factorization.

21877340324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45960827 (or 45960825 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 21877340324 in words is "twenty-one billion, eight hundred seventy-seven million, three hundred forty thousand, three hundred twenty-four".