27556499516 has 24 divisors (see below), whose sum is σ = 59352461280. Its totient is φ = 10901472192.

The previous prime is 27556499483. The next prime is 27556499533. The reversal of 27556499516 is 61599465572.

It is a happy number.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 37851971 + ... + 37852698.

It is an arithmetic number, because the mean of its divisors is an integer number (2473019220).

Almost surely, 2^27556499516 is an apocalyptic number.

27556499516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

27556499516 is an abundant number, since it is smaller than the sum of its proper divisors (31795961764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27556499516 is a wasteful number, since it uses less digits than its factorization.

27556499516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75704693 (or 75704691 counting only the distinct ones).

The product of its digits is 20412000, while the sum is 59.

The spelling of 27556499516 in words is "twenty-seven billion, five hundred fifty-six million, four hundred ninety-nine thousand, five hundred sixteen".