11613064215565 has 8 divisors (see below), whose sum is σ = 14755422768120. Its totient is φ = 8743954232832.

The previous prime is 11613064215563. The next prime is 11613064215581. The reversal of 11613064215565 is 56551246031611.

It can be written as a sum of positive squares in 4 ways, for example, as 3148857348004 + 8464206867561 = 1774502^2 + 2909331^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11613064215565 - 2¹ = 11613064215563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11613064215563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68312142360 + ... + 68312142529.

It is an arithmetic number, because the mean of its divisors is an integer number (1844427846015).

Almost surely, 2^{11613064215565} is an apocalyptic number.

It is an amenable number.

11613064215565 is a deficient number, since it is larger than the sum of its proper divisors (3142358552555).

11613064215565 is a wasteful number, since it uses less digits than its factorization.

11613064215565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136624284911.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 11613064215565 in words is "eleven trillion, six hundred thirteen billion, sixty-four million, two hundred fifteen thousand, five hundred sixty-five".