13006005987 has 8 divisors (see below), whose sum is σ = 18675290704. Its totient is φ = 8003695968.

The previous prime is 13006005979. The next prime is 13006005997. The reversal of 13006005987 is 78950060031.

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

It is not a de Polignac number, because 13006005987 - 2³ = 13006005979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 333487333 = 13006005987 / (1 + 3 + 0 + 0 + 6 + 0 + 0 + 5 + 9 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13006005997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166743628 + ... + 166743705.

It is an arithmetic number, because the mean of its divisors is an integer number (2334411338).

Almost surely, 2^13006005987 is an apocalyptic number.

13006005987 is a deficient number, since it is larger than the sum of its proper divisors (5669284717).

13006005987 is a wasteful number, since it uses less digits than its factorization.

13006005987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333487349.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 13006005987 in words is "thirteen billion, six million, five thousand, nine hundred eighty-seven".