74467130581 has 4 divisors (see below), whose sum is σ = 77034962700. Its totient is φ = 71899298464.

The previous prime is 74467130539. The next prime is 74467130603. The reversal of 74467130581 is 18503176447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40820565681 + 33646564900 = 202041^2 + 183430^2 .

It is a cyclic number.

It is not a de Polignac number, because 74467130581 - 2¹⁹ = 74466606293 is a prime.

It is a super-2 number, since 2×74467130581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74467170581) 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 in 3 ways as a sum of consecutive naturals, for example, 1283916016 + ... + 1283916073.

It is an arithmetic number, because the mean of its divisors is an integer number (19258740675).

Almost surely, 2^74467130581 is an apocalyptic number.

It is an amenable number.

74467130581 is a deficient number, since it is larger than the sum of its proper divisors (2567832119).

74467130581 is a wasteful number, since it uses less digits than its factorization.

74467130581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567832118.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 74467130581 in words is "seventy-four billion, four hundred sixty-seven million, one hundred thirty thousand, five hundred eighty-one".