21314134652 has 24 divisors (see below), whose sum is σ = 38011253616. Its totient is φ = 10453858688.

The previous prime is 21314134637. The next prime is 21314134687. The reversal of 21314134652 is 25643141312.

It is a super-2 number, since 2×21314134652² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715888 + ... + 1728264.

It is an arithmetic number, because the mean of its divisors is an integer number (1583802234).

Almost surely, 2^21314134652 is an apocalyptic number.

It is an amenable number.

21314134652 is a deficient number, since it is larger than the sum of its proper divisors (16697118964).

21314134652 is a wasteful number, since it uses less digits than its factorization.

21314134652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20557 (or 20555 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

Adding to 21314134652 its reverse (25643141312), we get a palindrome (46957275964).

The spelling of 21314134652 in words is "twenty-one billion, three hundred fourteen million, one hundred thirty-four thousand, six hundred fifty-two".