27205562145 has 16 divisors (see below), whose sum is σ = 46089423360. Its totient is φ = 13656125184.

The previous prime is 27205562143. The next prime is 27205562171. The reversal of 27205562145 is 54126550272.

It is not a de Polignac number, because 27205562145 - 2¹ = 27205562143 is a prime.

It is a super-2 number, since 2×27205562145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27205562141) 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, 53343985 + ... + 53344494.

It is an arithmetic number, because the mean of its divisors is an integer number (2880588960).

Almost surely, 2^27205562145 is an apocalyptic number.

It is an amenable number.

27205562145 is a deficient number, since it is larger than the sum of its proper divisors (18883861215).

27205562145 is a wasteful number, since it uses less digits than its factorization.

27205562145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106688504.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 27205562145 in words is "twenty-seven billion, two hundred five million, five hundred sixty-two thousand, one hundred forty-five".