27499197830 has 16 divisors (see below), whose sum is σ = 53306137584. Its totient is φ = 10153549920.

The previous prime is 27499197827. The next prime is 27499197851. The reversal of 27499197830 is 3879199472.

It is a self number, because there is not a number n which added to its sum of digits gives 27499197830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105766016 + ... + 105766275.

It is an arithmetic number, because the mean of its divisors is an integer number (3331633599).

Almost surely, 2^27499197830 is an apocalyptic number.

27499197830 is a deficient number, since it is larger than the sum of its proper divisors (25806939754).

27499197830 is a wasteful number, since it uses less digits than its factorization.

27499197830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211532311.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 27499197830 in words is "twenty-seven billion, four hundred ninety-nine million, one hundred ninety-seven thousand, eight hundred thirty".