272017384781 has 2 divisors, whose sum is σ = 272017384782. Its totient is φ = 272017384780.

The previous prime is 272017384777. The next prime is 272017384841. The reversal of 272017384781 is 187483710272.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193538404900 + 78478979881 = 439930^2 + 280141^2 .

It is a cyclic number.

It is not a de Polignac number, because 272017384781 - 2² = 272017384777 is a prime.

It is a super-2 number, since 2×272017384781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272017384711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136008692390 + 136008692391.

It is an arithmetic number, because the mean of its divisors is an integer number (136008692391).

Almost surely, 2^272017384781 is an apocalyptic number.

It is an amenable number.

272017384781 is a deficient number, since it is larger than the sum of its proper divisors (1).

272017384781 is an equidigital number, since it uses as much as digits as its factorization.

272017384781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1053696, while the sum is 50.

The spelling of 272017384781 in words is "two hundred seventy-two billion, seventeen million, three hundred eighty-four thousand, seven hundred eighty-one".