11517716487 has 8 divisors (see below), whose sum is σ = 15477876736. Its totient is φ = 7618016952.

The previous prime is 11517716479. The next prime is 11517716491. The reversal of 11517716487 is 78461771511.

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

It is not a de Polignac number, because 11517716487 - 2³ = 11517716479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11517716887) 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, 15114733 + ... + 15115494.

It is an arithmetic number, because the mean of its divisors is an integer number (1934734592).

Almost surely, 2^11517716487 is an apocalyptic number.

11517716487 is a deficient number, since it is larger than the sum of its proper divisors (3960160249).

11517716487 is a wasteful number, since it uses less digits than its factorization.

11517716487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30230357.

The product of its digits is 329280, while the sum is 48.

The spelling of 11517716487 in words is "eleven billion, five hundred seventeen million, seven hundred sixteen thousand, four hundred eighty-seven".