11506581055 has 8 divisors (see below), whose sum is σ = 13818700800. Its totient is φ = 9198062496.

The previous prime is 11506581043. The next prime is 11506581067. The reversal of 11506581055 is 55018560511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11506581043) and next prime (11506581067).

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

It is a cyclic number.

It is not a de Polignac number, because 11506581055 - 2⁷ = 11506580927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 893260 + ... + 906049.

It is an arithmetic number, because the mean of its divisors is an integer number (1727337600).

Almost surely, 2^11506581055 is an apocalyptic number.

11506581055 is a deficient number, since it is larger than the sum of its proper divisors (2312119745).

11506581055 is a wasteful number, since it uses less digits than its factorization.

11506581055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800593.

The product of its (nonzero) digits is 30000, while the sum is 37.

The spelling of 11506581055 in words is "eleven billion, five hundred six million, five hundred eighty-one thousand, fifty-five".