21365636160727 has 8 divisors (see below), whose sum is σ = 21798540086400. Its totient is φ = 20935091385144.

The previous prime is 21365636160643. The next prime is 21365636160733. The reversal of 21365636160727 is 72706163656312.

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

It is a cyclic number.

It is not a de Polignac number, because 21365636160727 - 2²³ = 21365627772119 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 (21365636163727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589769227 + ... + 589805452.

It is an arithmetic number, because the mean of its divisors is an integer number (2724817510800).

Almost surely, 2^{21365636160727} is an apocalyptic number.

21365636160727 is a deficient number, since it is larger than the sum of its proper divisors (432903925673).

21365636160727 is a wasteful number, since it uses less digits than its factorization.

21365636160727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179575045.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 21365636160727 in words is "twenty-one trillion, three hundred sixty-five billion, six hundred thirty-six million, one hundred sixty thousand, seven hundred twenty-seven".