21372327027 has 12 divisors (see below), whose sum is σ = 30873925680. Its totient is φ = 14246931888.

The previous prime is 21372327017. The next prime is 21372327047. The reversal of 21372327027 is 72072327312.

It is not a de Polignac number, because 21372327027 - 2²³ = 21363938419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21372326982 and 21372327000.

It is not an unprimeable number, because it can be changed into a prime (21372327017) 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, 4153 + ... + 206789.

It is an arithmetic number, because the mean of its divisors is an integer number (2572827140).

Almost surely, 2^21372327027 is an apocalyptic number.

21372327027 is a deficient number, since it is larger than the sum of its proper divisors (9501598653).

21372327027 is a wasteful number, since it uses less digits than its factorization.

21372327027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214362 (or 214359 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The spelling of 21372327027 in words is "twenty-one billion, three hundred seventy-two million, three hundred twenty-seven thousand, twenty-seven".