72642355241 has 2 divisors, whose sum is σ = 72642355242. Its totient is φ = 72642355240.

The previous prime is 72642355183. The next prime is 72642355267. The reversal of 72642355241 is 14255324627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67288360000 + 5353995241 = 259400^2 + 73171^2 .

It is a cyclic number.

It is not a de Polignac number, because 72642355241 - 2²⁶ = 72575246377 is a prime.

It is not a weakly prime, because it can be changed into another prime (72642355441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36321177620 + 36321177621.

It is an arithmetic number, because the mean of its divisors is an integer number (36321177621).

Almost surely, 2^72642355241 is an apocalyptic number.

It is an amenable number.

72642355241 is a deficient number, since it is larger than the sum of its proper divisors (1).

72642355241 is an equidigital number, since it uses as much as digits as its factorization.

72642355241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 41.

Adding to 72642355241 its reverse (14255324627), we get a palindrome (86897679868).

The spelling of 72642355241 in words is "seventy-two billion, six hundred forty-two million, three hundred fifty-five thousand, two hundred forty-one".