73423262945 has 4 divisors (see below), whose sum is σ = 88107915540. Its totient is φ = 58738610352.

The previous prime is 73423262929. The next prime is 73423262947. The reversal of 73423262945 is 54926232437.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28678745104 + 44744517841 = 169348^2 + 211529^2 .

It is a cyclic number.

It is not a de Polignac number, because 73423262945 - 2⁴ = 73423262929 is a prime.

It is a super-2 number, since 2×73423262945² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73423262945.

It is not an unprimeable number, because it can be changed into a prime (73423262947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7342326290 + ... + 7342326299.

It is an arithmetic number, because the mean of its divisors is an integer number (22026978885).

Almost surely, 2^73423262945 is an apocalyptic number.

It is an amenable number.

73423262945 is a deficient number, since it is larger than the sum of its proper divisors (14684652595).

73423262945 is a wasteful number, since it uses less digits than its factorization.

73423262945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14684652594.

The product of its digits is 2177280, while the sum is 47.

The spelling of 73423262945 in words is "seventy-three billion, four hundred twenty-three million, two hundred sixty-two thousand, nine hundred forty-five".