27694353499 has 4 divisors (see below), whose sum is σ = 27774164664. Its totient is φ = 27614542336.

The previous prime is 27694353493. The next prime is 27694353527. The reversal of 27694353499 is 99435349672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27694353499 - 2¹⁷ = 27694222427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27694353493) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 39905062 + ... + 39905755.

It is an arithmetic number, because the mean of its divisors is an integer number (6943541166).

Almost surely, 2^27694353499 is an apocalyptic number.

27694353499 is a deficient number, since it is larger than the sum of its proper divisors (79811165).

27694353499 is an equidigital number, since it uses as much as digits as its factorization.

27694353499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79811164.

The product of its digits is 44089920, while the sum is 61.

The spelling of 27694353499 in words is "twenty-seven billion, six hundred ninety-four million, three hundred fifty-three thousand, four hundred ninety-nine".