11613657541 has 4 divisors (see below), whose sum is σ = 11668698784. Its totient is φ = 11558616300.

The previous prime is 11613657533. The next prime is 11613657557. The reversal of 11613657541 is 14575631611.

11613657541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11613657541 - 2³ = 11613657533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11613657494 and 11613657503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11613654541) 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, 27520305 + ... + 27520726.

It is an arithmetic number, because the mean of its divisors is an integer number (2917174696).

Almost surely, 2^11613657541 is an apocalyptic number.

It is an amenable number.

11613657541 is a deficient number, since it is larger than the sum of its proper divisors (55041243).

11613657541 is an equidigital number, since it uses as much as digits as its factorization.

11613657541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55041242.

The product of its digits is 75600, while the sum is 40.

The spelling of 11613657541 in words is "eleven billion, six hundred thirteen million, six hundred fifty-seven thousand, five hundred forty-one".