11456515987 has 8 divisors (see below), whose sum is σ = 13340202336. Its totient is φ = 9634589952.

The previous prime is 11456515921. The next prime is 11456515991. The reversal of 11456515987 is 78951565411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11456515987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11456512987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15439678 + ... + 15440419.

It is an arithmetic number, because the mean of its divisors is an integer number (1667525292).

Almost surely, 2^11456515987 is an apocalyptic number.

11456515987 is a deficient number, since it is larger than the sum of its proper divisors (1883686349).

11456515987 is an equidigital number, since it uses as much as digits as its factorization.

11456515987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30880157.

The product of its digits is 1512000, while the sum is 52.

The spelling of 11456515987 in words is "eleven billion, four hundred fifty-six million, five hundred fifteen thousand, nine hundred eighty-seven".