73145743663043 has 4 divisors (see below), whose sum is σ = 74175965404848. Its totient is φ = 72115521921240.

The previous prime is 73145743663039. The next prime is 73145743663049. The reversal of 73145743663043 is 34036634754137.

It is a happy number.

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 73145743663043 - 2² = 73145743663039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73145743663043.

It is not an unprimeable number, because it can be changed into a prime (73145743663049) 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, 515110870796 + ... + 515110870937.

It is an arithmetic number, because the mean of its divisors is an integer number (18543991351212).

Almost surely, 2^{73145743663043} is an apocalyptic number.

73145743663043 is a deficient number, since it is larger than the sum of its proper divisors (1030221741805).

73145743663043 is a wasteful number, since it uses less digits than its factorization.

73145743663043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030221741804.

The product of its (nonzero) digits is 45722880, while the sum is 56.

The spelling of 73145743663043 in words is "seventy-three trillion, one hundred forty-five billion, seven hundred forty-three million, six hundred sixty-three thousand, forty-three".