27205144791 has 32 divisors (see below), whose sum is σ = 40549386240. Its totient is φ = 16084629600.

The previous prime is 27205144777. The next prime is 27205144801. The reversal of 27205144791 is 19744150272.

It is not a de Polignac number, because 27205144791 - 2¹¹ = 27205142743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27205144711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201726 + ... + 308388.

It is an arithmetic number, because the mean of its divisors is an integer number (1267168320).

Almost surely, 2^27205144791 is an apocalyptic number.

27205144791 is a deficient number, since it is larger than the sum of its proper divisors (13344241449).

27205144791 is a wasteful number, since it uses less digits than its factorization.

27205144791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106867.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 27205144791 in words is "twenty-seven billion, two hundred five million, one hundred forty-four thousand, seven hundred ninety-one".