1166523645044 has 6 divisors (see below), whose sum is σ = 2041416378834. Its totient is φ = 583261822520.

The previous prime is 1166523645029. The next prime is 1166523645047. The reversal of 1166523645044 is 4405463256611.

It can be written as a sum of positive squares in only one way, i.e., 1086310076644 + 80213568400 = 1042262^2 + 283220^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1166523645044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166523645047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145815455627 + ... + 145815455634.

It is an arithmetic number, because the mean of its divisors is an integer number (340236063139).

Almost surely, 2^{1166523645044} is an apocalyptic number.

It is an amenable number.

1166523645044 is a deficient number, since it is larger than the sum of its proper divisors (874892733790).

1166523645044 is a wasteful number, since it uses less digits than its factorization.

1166523645044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291630911265 (or 291630911263 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 1166523645044 in words is "one trillion, one hundred sixty-six billion, five hundred twenty-three million, six hundred forty-five thousand, forty-four".