11555871441 has 8 divisors (see below), whose sum is σ = 15438708000. Its totient is φ = 7688474592.

The previous prime is 11555871433. The next prime is 11555871479. The reversal of 11555871441 is 14417855511.

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

It is not a de Polignac number, because 11555871441 - 2³ = 11555871433 is a prime.

It is a super-3 number, since 3×11555871441³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11555871393 and 11555871402.

It is not an unprimeable number, because it can be changed into a prime (11555871241) 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, 3858180 + ... + 3861173.

It is an arithmetic number, because the mean of its divisors is an integer number (1929838500).

Almost surely, 2^11555871441 is an apocalyptic number.

It is an amenable number.

11555871441 is a deficient number, since it is larger than the sum of its proper divisors (3882836559).

11555871441 is an equidigital number, since it uses as much as digits as its factorization.

11555871441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7719855.

The product of its digits is 112000, while the sum is 42.

The spelling of 11555871441 in words is "eleven billion, five hundred fifty-five million, eight hundred seventy-one thousand, four hundred forty-one".