27511235545 has 16 divisors (see below), whose sum is σ = 34167360528. Its totient is φ = 21250805760.

The previous prime is 27511235503. The next prime is 27511235551. The reversal of 27511235545 is 54553211572.

It can be written as a sum of positive squares in 8 ways, for example, as 9344508889 + 18166726656 = 96667^2 + 134784^2 .

It is not a de Polignac number, because 27511235545 - 2¹³ = 27511227353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27511235498 and 27511235507.

It is an unprimeable number.

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, 671874 + ... + 711643.

It is an arithmetic number, because the mean of its divisors is an integer number (2135460033).

Almost surely, 2^27511235545 is an apocalyptic number.

It is an amenable number.

27511235545 is a deficient number, since it is larger than the sum of its proper divisors (6656124983).

27511235545 is a wasteful number, since it uses less digits than its factorization.

27511235545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383660.

The product of its digits is 210000, while the sum is 40.

The spelling of 27511235545 in words is "twenty-seven billion, five hundred eleven million, two hundred thirty-five thousand, five hundred forty-five".