21433014540 has 108 divisors (see below), whose sum is σ = 75627953856. Its totient is φ = 4898972736.

The previous prime is 21433014539. The next prime is 21433014563. The reversal of 21433014540 is 4541033412.

It is a happy number.

It is a super-2 number, since 2×21433014540² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1206204 + ... + 1223843.

It is an arithmetic number, because the mean of its divisors is an integer number (700258832).

Almost surely, 2^21433014540 is an apocalyptic number.

21433014540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21433014540 is an abundant number, since it is smaller than the sum of its proper divisors (54194939316).

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

21433014540 is a wasteful number, since it uses less digits than its factorization.

21433014540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430076 (or 2430064 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 21433014540 its reverse (4541033412), we get a palindrome (25974047952).

The spelling of 21433014540 in words is "twenty-one billion, four hundred thirty-three million, fourteen thousand, five hundred forty".