1113640521156 has 24 divisors (see below), whose sum is σ = 2887216166240. Its totient is φ = 371213507016.

The previous prime is 1113640521151. The next prime is 1113640521181. The reversal of 1113640521156 is 6511250463111.

1113640521156 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 640 + 5 + 2 + 1 + 1 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1113640521156.

It is not an unprimeable number, because it can be changed into a prime (1113640521151) 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 7 ways as a sum of consecutive naturals, for example, 5155743046 + ... + 5155743261.

Almost surely, 2^{1113640521156} is an apocalyptic number.

It is an amenable number.

1113640521156 is an abundant number, since it is smaller than the sum of its proper divisors (1773575645084).

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

1113640521156 is a wasteful number, since it uses less digits than its factorization.

1113640521156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10311486320 (or 10311486312 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

Adding to 1113640521156 its reverse (6511250463111), we get a palindrome (7624890984267).

The spelling of 1113640521156 in words is "one trillion, one hundred thirteen billion, six hundred forty million, five hundred twenty-one thousand, one hundred fifty-six".