21454051310 has 32 divisors (see below), whose sum is σ = 38894789952. Its totient is φ = 8520019200.

The previous prime is 21454051277. The next prime is 21454051337. The reversal of 21454051310 is 1315045412.

It is a super-2 number, since 2×21454051310² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21454051310.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4094012 + ... + 4099248.

It is an arithmetic number, because the mean of its divisors is an integer number (1215462186).

Almost surely, 2^21454051310 is an apocalyptic number.

21454051310 is a deficient number, since it is larger than the sum of its proper divisors (17440738642).

21454051310 is a wasteful number, since it uses less digits than its factorization.

21454051310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8108.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 21454051310 its reverse (1315045412), we get a palindrome (22769096722).

The spelling of 21454051310 in words is "twenty-one billion, four hundred fifty-four million, fifty-one thousand, three hundred ten".