11391945454 has 8 divisors (see below), whose sum is σ = 17091606168. Its totient is φ = 5694743400.

The previous prime is 11391945437. The next prime is 11391945457. The reversal of 11391945454 is 45454919311.

11391945454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×11391945454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11391945457) 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 3 ways as a sum of consecutive naturals, for example, 603037 + ... + 621640.

It is an arithmetic number, because the mean of its divisors is an integer number (2136450771).

Almost surely, 2^11391945454 is an apocalyptic number.

11391945454 is a deficient number, since it is larger than the sum of its proper divisors (5699660714).

11391945454 is a wasteful number, since it uses less digits than its factorization.

11391945454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229330.

The product of its digits is 388800, while the sum is 46.

The spelling of 11391945454 in words is "eleven billion, three hundred ninety-one million, nine hundred forty-five thousand, four hundred fifty-four".