11505000654987 has 16 divisors (see below), whose sum is σ = 18562690132992. Its totient is φ = 6187563377280.

The previous prime is 11505000654977. The next prime is 11505000654989. The reversal of 11505000654987 is 78945600050511.

It is not a de Polignac number, because 11505000654987 - 2¹⁴ = 11505000638603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (11505000654989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16113445939 + ... + 16113446652.

It is an arithmetic number, because the mean of its divisors is an integer number (1160168133312).

Almost surely, 2^{11505000654987} is an apocalyptic number.

11505000654987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11505000654987 is a deficient number, since it is larger than the sum of its proper divisors (7057689478005).

11505000654987 is a wasteful number, since it uses less digits than its factorization.

11505000654987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32226892618.

The product of its (nonzero) digits is 1512000, while the sum is 51.

The spelling of 11505000654987 in words is "eleven trillion, five hundred five billion, six hundred fifty-four thousand, nine hundred eighty-seven".