21314504016 has 60 divisors (see below), whose sum is σ = 64239552468. Its totient is φ = 6558308352.

The previous prime is 21314503963. The next prime is 21314504017. The reversal of 21314504016 is 61040541312.

It is a happy number.

21314504016 is a `hidden beast` number, since 213 + 1 + 45 + 0 + 401 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6746979600 + 14567524416 = 82140^2 + 120696^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314504017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5691105 + ... + 5694848.

Almost surely, 2^21314504016 is an apocalyptic number.

21314504016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21314504016 is an abundant number, since it is smaller than the sum of its proper divisors (42925048452).

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

21314504016 is a wasteful number, since it uses less digits than its factorization.

21314504016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11385980 (or 11385971 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 21314504016 in words is "twenty-one billion, three hundred fourteen million, five hundred four thousand, sixteen".