72344054017 has 2 divisors, whose sum is σ = 72344054018. Its totient is φ = 72344054016.

The previous prime is 72344053981. The next prime is 72344054051. The reversal of 72344054017 is 71045044327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41717654001 + 30626400016 = 204249^2 + 175004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72344054017 is a prime.

It is a super-2 number, since 2×72344054017² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72344064017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36172027008 + 36172027009.

It is an arithmetic number, because the mean of its divisors is an integer number (36172027009).

Almost surely, 2^72344054017 is an apocalyptic number.

It is an amenable number.

72344054017 is a deficient number, since it is larger than the sum of its proper divisors (1).

72344054017 is an equidigital number, since it uses as much as digits as its factorization.

72344054017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 37.

The spelling of 72344054017 in words is "seventy-two billion, three hundred forty-four million, fifty-four thousand, seventeen".