73203004145 has 4 divisors (see below), whose sum is σ = 87843604980. Its totient is φ = 58562403312.

The previous prime is 73203004141. The next prime is 73203004181. The reversal of 73203004145 is 54140030237.

It is a happy number.

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 48815809249 + 24387194896 = 220943^2 + 156164^2 .

It is a cyclic number.

It is not a de Polignac number, because 73203004145 - 2² = 73203004141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73203004141) 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, 7320300410 + ... + 7320300419.

It is an arithmetic number, because the mean of its divisors is an integer number (21960901245).

Almost surely, 2^73203004145 is an apocalyptic number.

It is an amenable number.

73203004145 is a deficient number, since it is larger than the sum of its proper divisors (14640600835).

73203004145 is a wasteful number, since it uses less digits than its factorization.

73203004145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14640600834.

The product of its (nonzero) digits is 10080, while the sum is 29.

The spelling of 73203004145 in words is "seventy-three billion, two hundred three million, four thousand, one hundred forty-five".