73123411665 has 16 divisors (see below), whose sum is σ = 117918701568. Its totient is φ = 38692071936.

The previous prime is 73123411639. The next prime is 73123411667. The reversal of 73123411665 is 56611432137.

It is not a de Polignac number, because 73123411665 - 2⁸ = 73123411409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73123411667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19190592 + ... + 19194401.

It is an arithmetic number, because the mean of its divisors is an integer number (7369918848).

Almost surely, 2^73123411665 is an apocalyptic number.

It is an amenable number.

73123411665 is a deficient number, since it is larger than the sum of its proper divisors (44795289903).

73123411665 is a wasteful number, since it uses less digits than its factorization.

73123411665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38385128.

The product of its digits is 90720, while the sum is 39.

The spelling of 73123411665 in words is "seventy-three billion, one hundred twenty-three million, four hundred eleven thousand, six hundred sixty-five".