27311801851 has 8 divisors (see below), whose sum is σ = 27474050160. Its totient is φ = 27149604192.

The previous prime is 27311801833. The next prime is 27311801861. The reversal of 27311801851 is 15810811372.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 27311801851 - 2⁵ = 27311801819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27311801851.

It is not an unprimeable number, because it can be changed into a prime (27311801821) 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, 2076885 + ... + 2089993.

It is an arithmetic number, because the mean of its divisors is an integer number (3434256270).

Almost surely, 2^27311801851 is an apocalyptic number.

27311801851 is a deficient number, since it is larger than the sum of its proper divisors (162248309).

27311801851 is a wasteful number, since it uses less digits than its factorization.

27311801851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25325.

The product of its (nonzero) digits is 13440, while the sum is 37.

The spelling of 27311801851 in words is "twenty-seven billion, three hundred eleven million, eight hundred one thousand, eight hundred fifty-one".