27245120761 has 4 divisors (see below), whose sum is σ = 27573375312. Its totient is φ = 26916866212.

The previous prime is 27245120759. The next prime is 27245120821. The reversal of 27245120761 is 16702154272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27245120761 - 2¹ = 27245120759 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 27245120761.

It is not an unprimeable number, because it can be changed into a prime (27245120711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164127151 + ... + 164127316.

It is an arithmetic number, because the mean of its divisors is an integer number (6893343828).

Almost surely, 2^27245120761 is an apocalyptic number.

It is an amenable number.

27245120761 is a deficient number, since it is larger than the sum of its proper divisors (328254551).

27245120761 is an equidigital number, since it uses as much as digits as its factorization.

27245120761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328254550.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 27245120761 in words is "twenty-seven billion, two hundred forty-five million, one hundred twenty thousand, seven hundred sixty-one".