72553502064361 has 2 divisors, whose sum is σ = 72553502064362. Its totient is φ = 72553502064360.

The previous prime is 72553502064349. The next prime is 72553502064403. The reversal of 72553502064361 is 16346020535527.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53864135529961 + 18689366534400 = 7339219^2 + 4323120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72553502064361 is a prime.

It is not a weakly prime, because it can be changed into another prime (72553502064961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36276751032180 + 36276751032181.

It is an arithmetic number, because the mean of its divisors is an integer number (36276751032181).

Almost surely, 2^{72553502064361} is an apocalyptic number.

It is an amenable number.

72553502064361 is a deficient number, since it is larger than the sum of its proper divisors (1).

72553502064361 is an equidigital number, since it uses as much as digits as its factorization.

72553502064361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 49.

Adding to 72553502064361 its reverse (16346020535527), we get a palindrome (88899522599888).

The spelling of 72553502064361 in words is "seventy-two trillion, five hundred fifty-three billion, five hundred two million, sixty-four thousand, three hundred sixty-one".