27345357405 has 48 divisors (see below), whose sum is σ = 50200061184. Its totient is φ = 14273858880.

The previous prime is 27345357379. The next prime is 27345357439. The reversal of 27345357405 is 50475354372.

27345357405 is a `hidden beast` number, since 2 + 73 + 4 + 5 + 3 + 574 + 0 + 5 = 666.

It is not a de Polignac number, because 27345357405 - 2⁶ = 27345357341 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 182326 + ... + 296535.

It is an arithmetic number, because the mean of its divisors is an integer number (1045834608).

Almost surely, 2^27345357405 is an apocalyptic number.

It is an amenable number.

27345357405 is a deficient number, since it is larger than the sum of its proper divisors (22854703779).

27345357405 is an equidigital number, since it uses as much as digits as its factorization.

27345357405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478928 (or 478916 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 45.

The spelling of 27345357405 in words is "twenty-seven billion, three hundred forty-five million, three hundred fifty-seven thousand, four hundred five".