27075620161 has 4 divisors (see below), whose sum is σ = 27076130752. Its totient is φ = 27075109572.

The previous prime is 27075620107. The next prime is 27075620191. The reversal of 27075620161 is 16102657072.

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 27075620161 - 2²³ = 27067231553 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 27075620161.

It is not an unprimeable number, because it can be changed into a prime (27075620101) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 165141 + ... + 285346.

It is an arithmetic number, because the mean of its divisors is an integer number (6769032688).

Almost surely, 2^27075620161 is an apocalyptic number.

It is an amenable number.

27075620161 is a deficient number, since it is larger than the sum of its proper divisors (510591).

27075620161 is an equidigital number, since it uses as much as digits as its factorization.

27075620161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510590.

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 27075620161 in words is "twenty-seven billion, seventy-five million, six hundred twenty thousand, one hundred sixty-one".