11164531557 has 8 divisors (see below), whose sum is σ = 14888085184. Its totient is φ = 7441999488.

The previous prime is 11164531541. The next prime is 11164531559. The reversal of 11164531557 is 75513546111.

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

It is not a de Polignac number, because 11164531557 - 2⁴ = 11164531541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11164531559) 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, 229513 + ... + 273870.

It is an arithmetic number, because the mean of its divisors is an integer number (1861010648).

Almost surely, 2^11164531557 is an apocalyptic number.

It is an amenable number.

11164531557 is a deficient number, since it is larger than the sum of its proper divisors (3723553627).

11164531557 is an equidigital number, since it uses as much as digits as its factorization.

11164531557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510779.

The product of its digits is 63000, while the sum is 39.

The spelling of 11164531557 in words is "eleven billion, one hundred sixty-four million, five hundred thirty-one thousand, five hundred fifty-seven".