27490775917 has 48 divisors (see below), whose sum is σ = 32469595200. Its totient is φ = 23016268800.

The previous prime is 27490775849. The next prime is 27490775927. The reversal of 27490775917 is 71957709472.

It is a happy number.

It is not a de Polignac number, because 27490775917 - 2³¹ = 25343292269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27490775927) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102196059 + ... + 102196327.

It is an arithmetic number, because the mean of its divisors is an integer number (676449900).

Almost surely, 2^27490775917 is an apocalyptic number.

It is an amenable number.

27490775917 is a deficient number, since it is larger than the sum of its proper divisors (4978819283).

27490775917 is a wasteful number, since it uses less digits than its factorization.

27490775917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 7779240, while the sum is 58.

The spelling of 27490775917 in words is "twenty-seven billion, four hundred ninety million, seven hundred seventy-five thousand, nine hundred seventeen".