1166138057776 has 20 divisors (see below), whose sum is σ = 2259448013800. Its totient is φ = 583054699392.

The previous prime is 1166138057767. The next prime is 1166138057779. The reversal of 1166138057776 is 6777508316611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166138057776.

It is not an unprimeable number, because it can be changed into a prime (1166138057779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208221 + ... + 1541308.

It is an arithmetic number, because the mean of its divisors is an integer number (112972400690).

Almost surely, 2^{1166138057776} is an apocalyptic number.

1166138057776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1166138057776 is a deficient number, since it is larger than the sum of its proper divisors (1093309956024).

1166138057776 is a wasteful number, since it uses less digits than its factorization.

1166138057776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791196 (or 1791190 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 1166138057776 in words is "one trillion, one hundred sixty-six billion, one hundred thirty-eight million, fifty-seven thousand, seven hundred seventy-six".