27949936506 has 32 divisors (see below), whose sum is σ = 57906610560. Its totient is φ = 8983068864.

The previous prime is 27949936471. The next prime is 27949936507. The reversal of 27949936506 is 60563994972.

It is a self number, because there is not a number n which added to its sum of digits gives 27949936506.

It is not an unprimeable number, because it can be changed into a prime (27949936507) 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 15 ways as a sum of consecutive naturals, for example, 17971 + ... + 237113.

It is an arithmetic number, because the mean of its divisors is an integer number (1809581580).

Almost surely, 2^27949936506 is an apocalyptic number.

27949936506 is an abundant number, since it is smaller than the sum of its proper divisors (29956674054).

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

27949936506 is a wasteful number, since it uses less digits than its factorization.

27949936506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219910.

The product of its (nonzero) digits is 22044960, while the sum is 60.

The spelling of 27949936506 in words is "twenty-seven billion, nine hundred forty-nine million, nine hundred thirty-six thousand, five hundred six".