21336114540 has 96 divisors (see below), whose sum is σ = 65427183360. Its totient is φ = 5162939136.

The previous prime is 21336114533. The next prime is 21336114587. The reversal of 21336114540 is 4541163312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 21336114498 and 21336114507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185794 + ... + 277833.

It is an arithmetic number, because the mean of its divisors is an integer number (681533160).

Almost surely, 2^21336114540 is an apocalyptic number.

21336114540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21336114540 is an abundant number, since it is smaller than the sum of its proper divisors (44091068820).

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

21336114540 is a wasteful number, since it uses less digits than its factorization.

21336114540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463711 (or 463709 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 21336114540 its reverse (4541163312), we get a palindrome (25877277852).

The spelling of 21336114540 in words is "twenty-one billion, three hundred thirty-six million, one hundred fourteen thousand, five hundred forty".