27617249991 has 8 divisors (see below), whose sum is σ = 36823961584. Its totient is φ = 18411019200.

The previous prime is 27617249969. The next prime is 27617249993. The reversal of 27617249991 is 19994271672.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27617249991 - 2¹⁴ = 27617233607 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 (27617249993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47091 + ... + 239691.

It is an arithmetic number, because the mean of its divisors is an integer number (4602995198).

Almost surely, 2^27617249991 is an apocalyptic number.

27617249991 is a deficient number, since it is larger than the sum of its proper divisors (9206711593).

27617249991 is a wasteful number, since it uses less digits than its factorization.

27617249991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240401.

The product of its digits is 3429216, while the sum is 57.

The spelling of 27617249991 in words is "twenty-seven billion, six hundred seventeen million, two hundred forty-nine thousand, nine hundred ninety-one".