1166805120054 has 64 divisors (see below), whose sum is σ = 2691583603200. Its totient is φ = 330309004800.

The previous prime is 1166805120037. The next prime is 1166805120097. The reversal of 1166805120054 is 4500215086611.

It is a super-2 number, since 2×1166805120054² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166805119994 and 1166805120021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2276977 + ... + 2741939.

It is an arithmetic number, because the mean of its divisors is an integer number (42055993800).

Almost surely, 2^{1166805120054} is an apocalyptic number.

1166805120054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1166805120054 is an abundant number, since it is smaller than the sum of its proper divisors (1524778483146).

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

1166805120054 is a wasteful number, since it uses less digits than its factorization.

1166805120054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465525.

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 1166805120054 in words is "one trillion, one hundred sixty-six billion, eight hundred five million, one hundred twenty thousand, fifty-four".