1166116500541 has 8 divisors (see below), whose sum is σ = 1167471672120. Its totient is φ = 1164761545728.

The previous prime is 1166116500487. The next prime is 1166116500587. The reversal of 1166116500541 is 1450056116611.

It can be written as a sum of positive squares in 4 ways, for example, as 534996900 + 1165581503641 = 23130^2 + 1079621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166116500541 - 2²⁹ = 1165579629629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166116500541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166116501541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12343015 + ... + 12437131.

It is an arithmetic number, because the mean of its divisors is an integer number (145933959015).

Almost surely, 2^{1166116500541} is an apocalyptic number.

It is an amenable number.

1166116500541 is a deficient number, since it is larger than the sum of its proper divisors (1355171579).

1166116500541 is an equidigital number, since it uses as much as digits as its factorization.

1166116500541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108383.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 1166116500541 in words is "one trillion, one hundred sixty-six billion, one hundred sixteen million, five hundred thousand, five hundred forty-one".