11456217587 has 4 divisors (see below), whose sum is σ = 11460920976. Its totient is φ = 11451514200.

The previous prime is 11456217583. The next prime is 11456217589. The reversal of 11456217587 is 78571265411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11456217587 - 2² = 11456217583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11456217583) 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, 2348039 + ... + 2352912.

It is an arithmetic number, because the mean of its divisors is an integer number (2865230244).

Almost surely, 2^11456217587 is an apocalyptic number.

11456217587 is a deficient number, since it is larger than the sum of its proper divisors (4703389).

11456217587 is an equidigital number, since it uses as much as digits as its factorization.

11456217587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703388.

The product of its digits is 470400, while the sum is 47.

The spelling of 11456217587 in words is "eleven billion, four hundred fifty-six million, two hundred seventeen thousand, five hundred eighty-seven".