11585797878 has 16 divisors (see below), whose sum is σ = 23184835056. Its totient is φ = 3859726080.

The previous prime is 11585797871. The next prime is 11585797879. The reversal of 11585797878 is 87879758511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11585797871) 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 7 ways as a sum of consecutive naturals, for example, 540243 + ... + 561278.

It is an arithmetic number, because the mean of its divisors is an integer number (1449052191).

Almost surely, 2^11585797878 is an apocalyptic number.

11585797878 is an abundant number, since it is smaller than the sum of its proper divisors (11599037178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11585797878 is a wasteful number, since it uses less digits than its factorization.

11585797878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103279.

The product of its digits is 39513600, while the sum is 66.

The spelling of 11585797878 in words is "eleven billion, five hundred eighty-five million, seven hundred ninety-seven thousand, eight hundred seventy-eight".