11575678521245 has 18 divisors (see below), whose sum is σ = 13914014030046. Its totient is φ = 9245102056560.

The previous prime is 11575678521241. The next prime is 11575678521307. The reversal of 11575678521245 is 54212587657511.

It can be written as a sum of positive squares in only one way, i.e., 9260542816996 + 2315135704249 = 3043114^2 + 1521557^2 .

It is not a de Polignac number, because 11575678521245 - 2² = 11575678521241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11575678521241) 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 17 ways as a sum of consecutive naturals, for example, 7387158452 + ... + 7387160018.

It is an arithmetic number, because the mean of its divisors is an integer number (773000779447).

Almost surely, 2^{11575678521245} is an apocalyptic number.

It is an amenable number.

11575678521245 is a deficient number, since it is larger than the sum of its proper divisors (2338335508801).

11575678521245 is an frugal number, since it uses more digits than its factorization.

11575678521245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081 (or 2543 counting only the distinct ones).

The product of its digits is 23520000, while the sum is 59.

The spelling of 11575678521245 in words is "eleven trillion, five hundred seventy-five billion, six hundred seventy-eight million, five hundred twenty-one thousand, two hundred forty-five".