21300400184 has 32 divisors (see below), whose sum is σ = 45674670720. Its totient is φ = 9122551776.

The previous prime is 21300400183. The next prime is 21300400267. The reversal of 21300400184 is 48100400312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300400183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45194 + ... + 211289.

It is an arithmetic number, because the mean of its divisors is an integer number (1427333460).

Almost surely, 2^21300400184 is an apocalyptic number.

It is an amenable number.

21300400184 is an abundant number, since it is smaller than the sum of its proper divisors (24374270536).

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

21300400184 is a wasteful number, since it uses less digits than its factorization.

21300400184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257979 (or 257975 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21300400184 its reverse (48100400312), we get a palindrome (69400800496).

The spelling of 21300400184 in words is "twenty-one billion, three hundred million, four hundred thousand, one hundred eighty-four".