21314091485 has 4 divisors (see below), whose sum is σ = 25576909788. Its totient is φ = 17051273184.

The previous prime is 21314091443. The next prime is 21314091497. The reversal of 21314091485 is 58419041312.

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 15999973081 + 5314118404 = 126491^2 + 72898^2 .

It is a cyclic number.

It is not a de Polignac number, because 21314091485 - 2⁸ = 21314091229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131409144 + ... + 2131409153.

It is an arithmetic number, because the mean of its divisors is an integer number (6394227447).

Almost surely, 2^21314091485 is an apocalyptic number.

It is an amenable number.

21314091485 is a deficient number, since it is larger than the sum of its proper divisors (4262818303).

21314091485 is an equidigital number, since it uses as much as digits as its factorization.

21314091485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262818302.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 21314091485 in words is "twenty-one billion, three hundred fourteen million, ninety-one thousand, four hundred eighty-five".