13520418987 has 16 divisors (see below), whose sum is σ = 18320322080. Its totient is φ = 8867688192.

The previous prime is 13520418979. The next prime is 13520418991. The reversal of 13520418987 is 78981402531.

13520418987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13520418987 - 2³ = 13520418979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520418787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9189 + ... + 164697.

It is an arithmetic number, because the mean of its divisors is an integer number (1145020130).

Almost surely, 2^13520418987 is an apocalyptic number.

13520418987 is a deficient number, since it is larger than the sum of its proper divisors (4799903093).

13520418987 is a wasteful number, since it uses less digits than its factorization.

13520418987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155982.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 13520418987 in words is "thirteen billion, five hundred twenty million, four hundred eighteen thousand, nine hundred eighty-seven".