11385131454 has 24 divisors (see below), whose sum is σ = 24683140872. Its totient is φ = 3792681360.

The previous prime is 11385131447. The next prime is 11385131467. The reversal of 11385131454 is 45413158311.

11385131454 is a `hidden beast` number, since 1 + 138 + 513 + 1 + 4 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 167032 + ... + 225099.

It is an arithmetic number, because the mean of its divisors is an integer number (1028464203).

Almost surely, 2^11385131454 is an apocalyptic number.

11385131454 is an abundant number, since it is smaller than the sum of its proper divisors (13298009418).

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

11385131454 is a wasteful number, since it uses less digits than its factorization.

11385131454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393752 (or 393749 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

Adding to 11385131454 its reverse (45413158311), we get a palindrome (56798289765).

The spelling of 11385131454 in words is "eleven billion, three hundred eighty-five million, one hundred thirty-one thousand, four hundred fifty-four".