72741292277 has 2 divisors, whose sum is σ = 72741292278. Its totient is φ = 72741292276.

The previous prime is 72741292199. The next prime is 72741292297. The reversal of 72741292277 is 77229214727.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65122446481 + 7618845796 = 255191^2 + 87286^2 .

It is a cyclic number.

It is not a de Polignac number, because 72741292277 - 2¹² = 72741288181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72741292297) 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, 36370646138 + 36370646139.

It is an arithmetic number, because the mean of its divisors is an integer number (36370646139).

Almost surely, 2^72741292277 is an apocalyptic number.

It is an amenable number.

72741292277 is a deficient number, since it is larger than the sum of its proper divisors (1).

72741292277 is an equidigital number, since it uses as much as digits as its factorization.

72741292277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382976, while the sum is 50.

The spelling of 72741292277 in words is "seventy-two billion, seven hundred forty-one million, two hundred ninety-two thousand, two hundred seventy-seven".