11391377637433 has 4 divisors (see below), whose sum is σ = 11392549479028. Its totient is φ = 11390205795840.

The previous prime is 11391377637427. The next prime is 11391377637463. The reversal of 11391377637433 is 33473677319311.

It is the 1377884-th star number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4978489950009 + 6412887687424 = 2231253^2 + 2532368^2 .

It is a cyclic number.

It is not a de Polignac number, because 11391377637433 - 2⁹ = 11391377636921 is a prime.

It is the 3375112-nd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11391377637463) by changing a digit.

It is a nontrivial repunit in base 3375111.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585906216 + ... + 585925657.

It is an arithmetic number, because the mean of its divisors is an integer number (2848137369757).

Almost surely, 2^{11391377637433} is an apocalyptic number.

It is an amenable number.

11391377637433 is a deficient number, since it is larger than the sum of its proper divisors (1171841595).

11391377637433 is an equidigital number, since it uses as much as digits as its factorization.

11391377637433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171841594.

The product of its digits is 18003384, while the sum is 58.

The spelling of 11391377637433 in words is "eleven trillion, three hundred ninety-one billion, three hundred seventy-seven million, six hundred thirty-seven thousand, four hundred thirty-three".