116987511 has 8 divisors (see below), whose sum is σ = 156058624. Its totient is φ = 77954040.

The previous prime is 116987491. The next prime is 116987513. The reversal of 116987511 is 115789611.

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

It is not a de Polignac number, because 116987511 - 2⁹ = 116986999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 116987511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116987513) 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 7 ways as a sum of consecutive naturals, for example, 1111 + ... + 15336.

It is an arithmetic number, because the mean of its divisors is an integer number (19507328).

Almost surely, 2^116987511 is an apocalyptic number.

116987511 is a deficient number, since it is larger than the sum of its proper divisors (39071113).

116987511 is a wasteful number, since it uses less digits than its factorization.

116987511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18821.

The product of its digits is 15120, while the sum is 39.

The square root of 116987511 is about 10816.0765067560. The cubic root of 116987511 is about 489.0799213636.

The spelling of 116987511 in words is "one hundred sixteen million, nine hundred eighty-seven thousand, five hundred eleven".