74256380573 has 4 divisors (see below), whose sum is σ = 74259117180. Its totient is φ = 74253643968.

The previous prime is 74256380519. The next prime is 74256380587. The reversal of 74256380573 is 37508365247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37508365247 = 23 ⋅1630798489.

It can be written as a sum of positive squares in 2 ways, for example, as 1592169604 + 72664210969 = 39902^2 + 269563^2 .

It is a cyclic number.

It is not a de Polignac number, because 74256380573 - 2¹² = 74256376477 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 (74256380593) 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, 1327190 + ... + 1382007.

It is an arithmetic number, because the mean of its divisors is an integer number (18564779295).

Almost surely, 2^74256380573 is an apocalyptic number.

It is an amenable number.

74256380573 is a deficient number, since it is larger than the sum of its proper divisors (2736607).

74256380573 is a wasteful number, since it uses less digits than its factorization.

74256380573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736606.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 74256380573 in words is "seventy-four billion, two hundred fifty-six million, three hundred eighty thousand, five hundred seventy-three".