27823331385 has 16 divisors (see below), whose sum is σ = 49463700480. Its totient is φ = 14839110000.

The previous prime is 27823331383. The next prime is 27823331413. The reversal of 27823331385 is 58313332872.

27823331385 is a `hidden beast` number, since 2 + 7 + 8 + 233 + 31 + 385 = 666.

It is not a de Polignac number, because 27823331385 - 2¹ = 27823331383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 27823331385.

It is not an unprimeable number, because it can be changed into a prime (27823331381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103049241 + ... + 103049510.

It is an arithmetic number, because the mean of its divisors is an integer number (3091481280).

Almost surely, 2^27823331385 is an apocalyptic number.

It is an amenable number.

27823331385 is a deficient number, since it is larger than the sum of its proper divisors (21640369095).

27823331385 is a wasteful number, since it uses less digits than its factorization.

27823331385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206098765 (or 206098759 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 27823331385 in words is "twenty-seven billion, eight hundred twenty-three million, three hundred thirty-one thousand, three hundred eighty-five".