73124543123 has 4 divisors (see below), whose sum is σ = 73133511528. Its totient is φ = 73115574720.

The previous prime is 73124543117. The next prime is 73124543147. The reversal of 73124543123 is 32134542137.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73124543123 - 2¹² = 73124539027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73124543423) 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 3 ways as a sum of consecutive naturals, for example, 4471961 + ... + 4488282.

It is an arithmetic number, because the mean of its divisors is an integer number (18283377882).

Almost surely, 2^73124543123 is an apocalyptic number.

73124543123 is a deficient number, since it is larger than the sum of its proper divisors (8968405).

73124543123 is an equidigital number, since it uses as much as digits as its factorization.

73124543123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8968404.

The product of its digits is 60480, while the sum is 35.

The spelling of 73124543123 in words is "seventy-three billion, one hundred twenty-four million, five hundred forty-three thousand, one hundred twenty-three".