12987093499 has 4 divisors (see below), whose sum is σ = 13338096064. Its totient is φ = 12636090936.

The previous prime is 12987093491. The next prime is 12987093517. The reversal of 12987093499 is 99439078921.

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 12987093499 - 2³ = 12987093491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12987093491) 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, 175501227 + ... + 175501300.

It is an arithmetic number, because the mean of its divisors is an integer number (3334524016).

Almost surely, 2^12987093499 is an apocalyptic number.

12987093499 is a deficient number, since it is larger than the sum of its proper divisors (351002565).

12987093499 is an equidigital number, since it uses as much as digits as its factorization.

12987093499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351002564.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The spelling of 12987093499 in words is "twelve billion, nine hundred eighty-seven million, ninety-three thousand, four hundred ninety-nine".