11975463587 has 4 divisors (see below), whose sum is σ = 12361768896. Its totient is φ = 11589158280.

The previous prime is 11975463569. The next prime is 11975463589. The reversal of 11975463587 is 78536457911.

It is a happy number.

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 11975463587 - 2²⁶ = 11908354723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11975463589) 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, 193152608 + ... + 193152669.

It is an arithmetic number, because the mean of its divisors is an integer number (3090442224).

Almost surely, 2^11975463587 is an apocalyptic number.

11975463587 is a deficient number, since it is larger than the sum of its proper divisors (386305309).

11975463587 is an equidigital number, since it uses as much as digits as its factorization.

11975463587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386305308.

The product of its digits is 6350400, while the sum is 56.

The spelling of 11975463587 in words is "eleven billion, nine hundred seventy-five million, four hundred sixty-three thousand, five hundred eighty-seven".