21314143516 has 24 divisors (see below), whose sum is σ = 41210981280. Its totient is φ = 9594089472.

The previous prime is 21314143489. The next prime is 21314143541. The reversal of 21314143516 is 61534141312.

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, 6812421 + ... + 6815548.

It is an arithmetic number, because the mean of its divisors is an integer number (1717124220).

Almost surely, 2^21314143516 is an apocalyptic number.

It is an amenable number.

21314143516 is a deficient number, since it is larger than the sum of its proper divisors (19896837764).

21314143516 is a wasteful number, since it uses less digits than its factorization.

21314143516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13628013 (or 13628011 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

Adding to 21314143516 its reverse (61534141312), we get a palindrome (82848284828).

The spelling of 21314143516 in words is "twenty-one billion, three hundred fourteen million, one hundred forty-three thousand, five hundred sixteen".