21136234116264 has 32 divisors (see below), whose sum is σ = 55948855014720. Its totient is φ = 6630975408896.

The previous prime is 21136234116253. The next prime is 21136234116289. The reversal of 21136234116264 is 46261143263112.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25902247284 + ... + 25902248099.

It is an arithmetic number, because the mean of its divisors is an integer number (1748401719210).

Almost surely, 2^{21136234116264} is an apocalyptic number.

21136234116264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21136234116264 is an abundant number, since it is smaller than the sum of its proper divisors (34812620898456).

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

21136234116264 is a wasteful number, since it uses less digits than its factorization.

21136234116264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51804495409 (or 51804495405 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

Adding to 21136234116264 its reverse (46261143263112), we get a palindrome (67397377379376).

The spelling of 21136234116264 in words is "twenty-one trillion, one hundred thirty-six billion, two hundred thirty-four million, one hundred sixteen thousand, two hundred sixty-four".