1125516116556 has 36 divisors (see below), whose sum is σ = 3063904985232. Its totient is φ = 346312651104.

The previous prime is 1125516116551. The next prime is 1125516116563. The reversal of 1125516116556 is 6556116155211.

1125516116556 is a `hidden beast` number, since 1 + 1 + 25 + 5 + 1 + 61 + 16 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1125516116556² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1125516116551) 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 11 ways as a sum of consecutive naturals, for example, 1202474016 + ... + 1202474951.

It is an arithmetic number, because the mean of its divisors is an integer number (85108471812).

Almost surely, 2^{1125516116556} is an apocalyptic number.

It is an amenable number.

1125516116556 is an abundant number, since it is smaller than the sum of its proper divisors (1938388868676).

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

1125516116556 is a wasteful number, since it uses less digits than its factorization.

1125516116556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404948990 (or 2404948985 counting only the distinct ones).

The product of its digits is 270000, while the sum is 45.

The spelling of 1125516116556 in words is "one trillion, one hundred twenty-five billion, five hundred sixteen million, one hundred sixteen thousand, five hundred fifty-six".