1166241511680 has 144 divisors (see below), whose sum is σ = 4256781615744. Its totient is φ = 266569482240.

The previous prime is 1166241511657. The next prime is 1166241511681. The reversal of 1166241511680 is 861151426611.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1166241511681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21666601 + ... + 21720360.

Almost surely, 2^{1166241511680} is an apocalyptic number.

1166241511680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166241511680 is an abundant number, since it is smaller than the sum of its proper divisors (3090540104064).

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

1166241511680 is an equidigital number, since it uses as much as digits as its factorization.

1166241511680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43386992 (or 43386978 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 1166241511680 in words is "one trillion, one hundred sixty-six billion, two hundred forty-one million, five hundred eleven thousand, six hundred eighty".