12053138587 has 4 divisors (see below), whose sum is σ = 13775015536. Its totient is φ = 10331261640.

The previous prime is 12053138483. The next prime is 12053138593. The reversal of 12053138587 is 78583135021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78583135021 = 14197 ⋅5535193.

It is not a de Polignac number, because 12053138587 - 2¹⁵ = 12053105819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12053138287) 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, 860938464 + ... + 860938477.

It is an arithmetic number, because the mean of its divisors is an integer number (3443753884).

Almost surely, 2^12053138587 is an apocalyptic number.

12053138587 is a deficient number, since it is larger than the sum of its proper divisors (1721876949).

12053138587 is an equidigital number, since it uses as much as digits as its factorization.

12053138587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721876948.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 12053138587 in words is "twelve billion, fifty-three million, one hundred thirty-eight thousand, five hundred eighty-seven".