11615245541 has 4 divisors (see below), whose sum is σ = 11617316832. Its totient is φ = 11613174252.

The previous prime is 11615245517. The next prime is 11615245549. The reversal of 11615245541 is 14554251611.

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 a de Polignac number, because none of the positive numbers 2^k-11615245541 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 (11615245549) 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, 1027211 + ... + 1038456.

It is an arithmetic number, because the mean of its divisors is an integer number (2904329208).

Almost surely, 2^11615245541 is an apocalyptic number.

It is an amenable number.

11615245541 is a deficient number, since it is larger than the sum of its proper divisors (2071291).

11615245541 is an equidigital number, since it uses as much as digits as its factorization.

11615245541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071290.

The product of its digits is 24000, while the sum is 35.

The spelling of 11615245541 in words is "eleven billion, six hundred fifteen million, two hundred forty-five thousand, five hundred forty-one".