216327093553 has 4 divisors (see below), whose sum is σ = 217091500528. Its totient is φ = 215562686580.

The previous prime is 216327093547. The next prime is 216327093569. The reversal of 216327093553 is 355390723612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216327093553 - 2¹³ = 216327085361 is a prime.

It is a super-2 number, since 2×216327093553² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216327093523) 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, 382203063 + ... + 382203628.

It is an arithmetic number, because the mean of its divisors is an integer number (54272875132).

Almost surely, 2^216327093553 is an apocalyptic number.

It is an amenable number.

216327093553 is a deficient number, since it is larger than the sum of its proper divisors (764406975).

216327093553 is an equidigital number, since it uses as much as digits as its factorization.

216327093553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764406974.

The product of its (nonzero) digits is 1020600, while the sum is 46.

The spelling of 216327093553 in words is "two hundred sixteen billion, three hundred twenty-seven million, ninety-three thousand, five hundred fifty-three".