1163520772218 has 108 divisors (see below), whose sum is σ = 3045184495002. Its totient is φ = 332434322640.

The previous prime is 1163520772199. The next prime is 1163520772229. The reversal of 1163520772218 is 8122770253611.

1163520772218 is a `hidden beast` number, since 1 + 1 + 6 + 352 + 0 + 77 + 221 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 842674428729 + 320846343489 = 917973^2 + 566433^2 .

It is a super-3 number, since 3×1163520772218³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 261813 + ... + 1547768.

Almost surely, 2^{1163520772218} is an apocalyptic number.

1163520772218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1163520772218 is an abundant number, since it is smaller than the sum of its proper divisors (1881663722784).

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

1163520772218 is an frugal number, since it uses more digits than its factorization.

1163520772218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809621 (or 1809593 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 1163520772218 in words is "one trillion, one hundred sixty-three billion, five hundred twenty million, seven hundred seventy-two thousand, two hundred eighteen".