73145294503 has 4 divisors (see below), whose sum is σ = 73380488688. Its totient is φ = 72910100320.

The previous prime is 73145294501. The next prime is 73145294513. The reversal of 73145294503 is 30549254137.

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 73145294503 - 2¹ = 73145294501 is a prime.

It is a super-3 number, since 3×73145294503³ (a number of 34 digits) contains 333 as substring.

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 73145294503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73145294501) 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, 117596626 + ... + 117597247.

It is an arithmetic number, because the mean of its divisors is an integer number (18345122172).

Almost surely, 2^73145294503 is an apocalyptic number.

73145294503 is a deficient number, since it is larger than the sum of its proper divisors (235194185).

73145294503 is a wasteful number, since it uses less digits than its factorization.

73145294503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235194184.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 73145294503 in words is "seventy-three billion, one hundred forty-five million, two hundred ninety-four thousand, five hundred three".