74432509213 has 4 divisors (see below), whose sum is σ = 75115376380. Its totient is φ = 73749642048.

The previous prime is 74432509211. The next prime is 74432509267. The reversal of 74432509213 is 31290523447.

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 57076554649 + 17355954564 = 238907^2 + 131742^2 .

It is a cyclic number.

It is not a de Polignac number, because 74432509213 - 2¹ = 74432509211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74432509211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341433420 + ... + 341433637.

It is an arithmetic number, because the mean of its divisors is an integer number (18778844095).

Almost surely, 2^74432509213 is an apocalyptic number.

It is an amenable number.

74432509213 is a deficient number, since it is larger than the sum of its proper divisors (682867167).

74432509213 is a wasteful number, since it uses less digits than its factorization.

74432509213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682867166.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 74432509213 in words is "seventy-four billion, four hundred thirty-two million, five hundred nine thousand, two hundred thirteen".