11958078587 has 32 divisors (see below), whose sum is σ = 14943667200. Its totient is φ = 9317109888.

The previous prime is 11958078577. The next prime is 11958078599. The reversal of 11958078587 is 78587085911.

11958078587 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 11958078587 - 2¹⁴ = 11958062203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11958078547) 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 31 ways as a sum of consecutive naturals, for example, 1652864 + ... + 1660082.

It is an arithmetic number, because the mean of its divisors is an integer number (466989600).

Almost surely, 2^11958078587 is an apocalyptic number.

11958078587 is a deficient number, since it is larger than the sum of its proper divisors (2985588613).

11958078587 is a wasteful number, since it uses less digits than its factorization.

11958078587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7515.

The product of its (nonzero) digits is 5644800, while the sum is 59.

The spelling of 11958078587 in words is "eleven billion, nine hundred fifty-eight million, seventy-eight thousand, five hundred eighty-seven".