1166635320616 has 16 divisors (see below), whose sum is σ = 2215130356800. Its totient is φ = 575933892144.

The previous prime is 1166635320589. The next prime is 1166635320637. The reversal of 1166635320616 is 6160235366611.

It is a happy number.

It is a super-2 number, since 2×1166635320616² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922970350 + ... + 922971613.

It is an arithmetic number, because the mean of its divisors is an integer number (138445647300).

Almost surely, 2^{1166635320616} is an apocalyptic number.

It is an amenable number.

1166635320616 is a deficient number, since it is larger than the sum of its proper divisors (1048495036184).

1166635320616 is a wasteful number, since it uses less digits than its factorization.

1166635320616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845942048 (or 1845942044 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 1166635320616 in words is "one trillion, one hundred sixty-six billion, six hundred thirty-five million, three hundred twenty thousand, six hundred sixteen".