1165123005644 has 24 divisors (see below), whose sum is σ = 2249365056288. Its totient is φ = 524633247360.

The previous prime is 1165123005619. The next prime is 1165123005677. The reversal of 1165123005644 is 4465003215611.

It is a junction number, because it is equal to n+sod(n) for n = 1165123005598 and 1165123005607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273244352 + ... + 273248615.

It is an arithmetic number, because the mean of its divisors is an integer number (93723544012).

Almost surely, 2^{1165123005644} is an apocalyptic number.

It is an amenable number.

1165123005644 is a deficient number, since it is larger than the sum of its proper divisors (1084242050644).

1165123005644 is a wasteful number, since it uses less digits than its factorization.

1165123005644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546493025 (or 546493023 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 1165123005644 in words is "one trillion, one hundred sixty-five billion, one hundred twenty-three million, five thousand, six hundred forty-four".