11725381987 has 16 divisors (see below), whose sum is σ = 12843954144. Its totient is φ = 10615680000.

The previous prime is 11725381981. The next prime is 11725382027. The reversal of 11725381987 is 78918352711.

11725381987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11725381987 - 2³ = 11725381979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11725381981) 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, 3019287 + ... + 3023167.

It is an arithmetic number, because the mean of its divisors is an integer number (802747134).

Almost surely, 2^11725381987 is an apocalyptic number.

11725381987 is a deficient number, since it is larger than the sum of its proper divisors (1118572157).

11725381987 is a wasteful number, since it uses less digits than its factorization.

11725381987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950.

The product of its digits is 846720, while the sum is 52.

The spelling of 11725381987 in words is "eleven billion, seven hundred twenty-five million, three hundred eighty-one thousand, nine hundred eighty-seven".