11617388487 has 24 divisors (see below), whose sum is σ = 17400714240. Its totient is φ = 7460026560.

The previous prime is 11617388423. The next prime is 11617388537. The reversal of 11617388487 is 78488371611.

11617388487 is a `hidden beast` number, since 1 + 16 + 1 + 73 + 88 + 487 = 666.

It is not a de Polignac number, because 11617388487 - 2⁶ = 11617388423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11617388407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57018 + ... + 162744.

It is an arithmetic number, because the mean of its divisors is an integer number (725029760).

Almost surely, 2^11617388487 is an apocalyptic number.

11617388487 is a deficient number, since it is larger than the sum of its proper divisors (5783325753).

11617388487 is a wasteful number, since it uses less digits than its factorization.

11617388487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106183 (or 106180 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 54.

The spelling of 11617388487 in words is "eleven billion, six hundred seventeen million, three hundred eighty-eight thousand, four hundred eighty-seven".