11381584587 has 8 divisors (see below), whose sum is σ = 15461775504. Its totient is φ = 7444558368.

The previous prime is 11381584579. The next prime is 11381584601. The reversal of 11381584587 is 78548518311.

It is a happy number.

11381584587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11381584587 - 2³ = 11381584579 is a prime.

It is a super-2 number, since 2×11381584587² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11381584547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35790988 + ... + 35791305.

It is an arithmetic number, because the mean of its divisors is an integer number (1932721938).

Almost surely, 2^11381584587 is an apocalyptic number.

11381584587 is a deficient number, since it is larger than the sum of its proper divisors (4080190917).

11381584587 is an equidigital number, since it uses as much as digits as its factorization.

11381584587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71582349.

The product of its digits is 1075200, while the sum is 51.

The spelling of 11381584587 in words is "eleven billion, three hundred eighty-one million, five hundred eighty-four thousand, five hundred eighty-seven".