72674463181 has 2 divisors, whose sum is σ = 72674463182. Its totient is φ = 72674463180.

The previous prime is 72674463167. The next prime is 72674463247. The reversal of 72674463181 is 18136447627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70405846281 + 2268616900 = 265341^2 + 47630^2 .

It is a cyclic number.

It is not a de Polignac number, because 72674463181 - 2¹⁷ = 72674332109 is a prime.

It is a super-2 number, since 2×72674463181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72674463161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36337231590 + 36337231591.

It is an arithmetic number, because the mean of its divisors is an integer number (36337231591).

Almost surely, 2^72674463181 is an apocalyptic number.

It is an amenable number.

72674463181 is a deficient number, since it is larger than the sum of its proper divisors (1).

72674463181 is an equidigital number, since it uses as much as digits as its factorization.

72674463181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 49.

The spelling of 72674463181 in words is "seventy-two billion, six hundred seventy-four million, four hundred sixty-three thousand, one hundred eighty-one".