72245816689741 has 2 divisors, whose sum is σ = 72245816689742. Its totient is φ = 72245816689740.

The previous prime is 72245816689723. The next prime is 72245816689799. The reversal of 72245816689741 is 14798661854227.

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., 69125838498025 + 3119978191716 = 8314195^2 + 1766346^2 .

It is a cyclic number.

It is not a de Polignac number, because 72245816689741 - 2²³ = 72245808301133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72245816689441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36122908344870 + 36122908344871.

It is an arithmetic number, because the mean of its divisors is an integer number (36122908344871).

Almost surely, 2^{72245816689741} is an apocalyptic number.

It is an amenable number.

72245816689741 is a deficient number, since it is larger than the sum of its proper divisors (1).

72245816689741 is an equidigital number, since it uses as much as digits as its factorization.

72245816689741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 325140480, while the sum is 70.

The spelling of 72245816689741 in words is "seventy-two trillion, two hundred forty-five billion, eight hundred sixteen million, six hundred eighty-nine thousand, seven hundred forty-one".