21514434120 has 96 divisors (see below), whose sum is σ = 69971166720. Its totient is φ = 5733141120.

The previous prime is 21514434077. The next prime is 21514434169. The reversal of 21514434120 is 2143441512.

21514434120 is a `hidden beast` number, since 21 + 514 + 4 + 3 + 4 + 120 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509247 + ... + 549873.

It is an arithmetic number, because the mean of its divisors is an integer number (728866320).

Almost surely, 2^21514434120 is an apocalyptic number.

21514434120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21514434120 is an abundant number, since it is smaller than the sum of its proper divisors (48456732600).

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

21514434120 is a wasteful number, since it uses less digits than its factorization.

21514434120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42115 (or 42108 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 21514434120 its reverse (2143441512), we get a palindrome (23657875632).

The spelling of 21514434120 in words is "twenty-one billion, five hundred fourteen million, four hundred thirty-four thousand, one hundred twenty".