72411737647181 has 2 divisors, whose sum is σ = 72411737647182. Its totient is φ = 72411737647180.

The previous prime is 72411737647169. The next prime is 72411737647247. The reversal of 72411737647181 is 18174673711427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58873532522281 + 13538205124900 = 7672909^2 + 3679430^2 .

It is a cyclic number.

It is not a de Polignac number, because 72411737647181 - 2¹⁴ = 72411737630797 is a prime.

It is a super-2 number, since 2×72411737647181² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72411737647181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72411737647141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36205868823590 + 36205868823591.

It is an arithmetic number, because the mean of its divisors is an integer number (36205868823591).

Almost surely, 2^{72411737647181} is an apocalyptic number.

It is an amenable number.

72411737647181 is a deficient number, since it is larger than the sum of its proper divisors (1).

72411737647181 is an equidigital number, since it uses as much as digits as its factorization.

72411737647181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11063808, while the sum is 59.

The spelling of 72411737647181 in words is "seventy-two trillion, four hundred eleven billion, seven hundred thirty-seven million, six hundred forty-seven thousand, one hundred eighty-one".