21314297713 has 4 divisors (see below), whose sum is σ = 21606274468. Its totient is φ = 21022320960.

The previous prime is 21314297677. The next prime is 21314297729. The reversal of 21314297713 is 31779241312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6252381184 + 15061916529 = 79072^2 + 122727^2 .

It is a cyclic number.

It is not a de Polignac number, because 21314297713 - 2⁹ = 21314297201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21314297773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145988268 + ... + 145988413.

It is an arithmetic number, because the mean of its divisors is an integer number (5401568617).

Almost surely, 2^21314297713 is an apocalyptic number.

It is an amenable number.

21314297713 is a deficient number, since it is larger than the sum of its proper divisors (291976755).

21314297713 is an equidigital number, since it uses as much as digits as its factorization.

21314297713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291976754.

The product of its digits is 63504, while the sum is 40.

The spelling of 21314297713 in words is "twenty-one billion, three hundred fourteen million, two hundred ninety-seven thousand, seven hundred thirteen".