72203052717065 has 4 divisors (see below), whose sum is σ = 86643663260484. Its totient is φ = 57762442173648.

The previous prime is 72203052717043. The next prime is 72203052717067. The reversal of 72203052717065 is 56071725030227.

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 9146922774544 + 63056129942521 = 3024388^2 + 7940789^2 .

It is a cyclic number.

It is not a de Polignac number, because 72203052717065 - 2⁶ = 72203052717001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72203052717067) 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, 7220305271702 + ... + 7220305271711.

It is an arithmetic number, because the mean of its divisors is an integer number (21660915815121).

Almost surely, 2^{72203052717065} is an apocalyptic number.

It is an amenable number.

72203052717065 is a deficient number, since it is larger than the sum of its proper divisors (14440610543419).

72203052717065 is a wasteful number, since it uses less digits than its factorization.

72203052717065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14440610543418.

The product of its (nonzero) digits is 1234800, while the sum is 47.

The spelling of 72203052717065 in words is "seventy-two trillion, two hundred three billion, fifty-two million, seven hundred seventeen thousand, sixty-five".