27801152805 has 16 divisors (see below), whose sum is σ = 44832098304. Its totient is φ = 14710530240.

The previous prime is 27801152801. The next prime is 27801152857. The reversal of 27801152805 is 50825110872.

It is not a de Polignac number, because 27801152805 - 2² = 27801152801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27801152801) 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, 7294986 + ... + 7298795.

It is an arithmetic number, because the mean of its divisors is an integer number (2802006144).

Almost surely, 2^27801152805 is an apocalyptic number.

It is an amenable number.

27801152805 is a deficient number, since it is larger than the sum of its proper divisors (17030945499).

27801152805 is a wasteful number, since it uses less digits than its factorization.

27801152805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14593916.

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 27801152805 in words is "twenty-seven billion, eight hundred one million, one hundred fifty-two thousand, eight hundred five".