13440782987 has 8 divisors (see below), whose sum is σ = 14289791904. Its totient is φ = 12613826368.

The previous prime is 13440782969. The next prime is 13440783011. The reversal of 13440782987 is 78928704431.

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

It is a cyclic number.

It is not a de Polignac number, because 13440782987 - 2¹² = 13440778891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13440782387) 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, 5511818 + ... + 5514255.

It is an arithmetic number, because the mean of its divisors is an integer number (1786223988).

Almost surely, 2^13440782987 is an apocalyptic number.

13440782987 is a deficient number, since it is larger than the sum of its proper divisors (849008917).

13440782987 is a wasteful number, since it uses less digits than its factorization.

13440782987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026149.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 13440782987 in words is "thirteen billion, four hundred forty million, seven hundred eighty-two thousand, nine hundred eighty-seven".