1162221671556 has 144 divisors (see below), whose sum is σ = 3318470588160. Its totient is φ = 339731965440.

The previous prime is 1162221671551. The next prime is 1162221671557. The reversal of 1162221671556 is 6551761222611.

1162221671556 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 2 + 21 + 6 + 71 + 556 = 666.

It is a super-2 number, since 2×1162221671556² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1162221671551) 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 47 ways as a sum of consecutive naturals, for example, 12620976 + ... + 12712728.

It is an arithmetic number, because the mean of its divisors is an integer number (23044934640).

Almost surely, 2^{1162221671556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1162221671556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659235294080).

1162221671556 is an abundant number, since it is smaller than the sum of its proper divisors (2156248916604).

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

1162221671556 is a wasteful number, since it uses less digits than its factorization.

1162221671556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92906 (or 92901 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 1162221671556 in words is "one trillion, one hundred sixty-two billion, two hundred twenty-one million, six hundred seventy-one thousand, five hundred fifty-six".