21314452357 has 8 divisors (see below), whose sum is σ = 23256251712. Its totient is φ = 19373340000.

The previous prime is 21314452309. The next prime is 21314452363. The reversal of 21314452357 is 75325441312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21314452357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314452157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105769 + ... + 231982.

It is an arithmetic number, because the mean of its divisors is an integer number (2907031464).

Almost surely, 2^21314452357 is an apocalyptic number.

It is an amenable number.

21314452357 is a deficient number, since it is larger than the sum of its proper divisors (1941799355).

21314452357 is a wasteful number, since it uses less digits than its factorization.

21314452357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343499.

The product of its digits is 100800, while the sum is 37.

Adding to 21314452357 its reverse (75325441312), we get a palindrome (96639893669).

The spelling of 21314452357 in words is "twenty-one billion, three hundred fourteen million, four hundred fifty-two thousand, three hundred fifty-seven".