72818874694733 has 2 divisors, whose sum is σ = 72818874694734. Its totient is φ = 72818874694732.

The previous prime is 72818874694723. The next prime is 72818874694849. The reversal of 72818874694733 is 33749647881827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70154477933929 + 2664396760804 = 8375827^2 + 1632298^2 .

It is a cyclic number.

It is not a de Polignac number, because 72818874694733 - 2¹² = 72818874690637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72818874694723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36409437347366 + 36409437347367.

It is an arithmetic number, because the mean of its divisors is an integer number (36409437347367).

Almost surely, 2^{72818874694733} is an apocalyptic number.

It is an amenable number.

72818874694733 is a deficient number, since it is larger than the sum of its proper divisors (1).

72818874694733 is an equidigital number, since it uses as much as digits as its factorization.

72818874694733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2731180032, while the sum is 77.

The spelling of 72818874694733 in words is "seventy-two trillion, eight hundred eighteen billion, eight hundred seventy-four million, six hundred ninety-four thousand, seven hundred thirty-three".