72278537275033 has 2 divisors, whose sum is σ = 72278537275034. Its totient is φ = 72278537275032.

The previous prime is 72278537275003. The next prime is 72278537275069. The reversal of 72278537275033 is 33057273587227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37010712151449 + 35267825123584 = 6083643^2 + 5938672^2 .

It is a cyclic number.

It is not a de Polignac number, because 72278537275033 - 2³³ = 72269947340441 is a prime.

It is not a weakly prime, because it can be changed into another prime (72278537275003) 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 as a sum of consecutive naturals, namely, 36139268637516 + 36139268637517.

It is an arithmetic number, because the mean of its divisors is an integer number (36139268637517).

Almost surely, 2^{72278537275033} is an apocalyptic number.

It is an amenable number.

72278537275033 is a deficient number, since it is larger than the sum of its proper divisors (1).

72278537275033 is an equidigital number, since it uses as much as digits as its factorization.

72278537275033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103723200, while the sum is 61.

The spelling of 72278537275033 in words is "seventy-two trillion, two hundred seventy-eight billion, five hundred thirty-seven million, two hundred seventy-five thousand, thirty-three".