11555145241 has 4 divisors (see below), whose sum is σ = 12163310800. Its totient is φ = 10946979684.

The previous prime is 11555145229. The next prime is 11555145269. The reversal of 11555145241 is 14254155511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14254155511 = 379 ⋅37609909.

It is a cyclic number.

It is not a de Polignac number, because 11555145241 - 2⁵ = 11555145209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11555145197 and 11555145206.

It is not an unprimeable number, because it can be changed into a prime (11555145341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304082751 + ... + 304082788.

It is an arithmetic number, because the mean of its divisors is an integer number (3040827700).

Almost surely, 2^11555145241 is an apocalyptic number.

It is an amenable number.

11555145241 is a deficient number, since it is larger than the sum of its proper divisors (608165559).

11555145241 is an equidigital number, since it uses as much as digits as its factorization.

11555145241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608165558.

The product of its digits is 20000, while the sum is 34.

The spelling of 11555145241 in words is "eleven billion, five hundred fifty-five million, one hundred forty-five thousand, two hundred forty-one".