74564316245 has 4 divisors (see below), whose sum is σ = 89477179500. Its totient is φ = 59651452992.

The previous prime is 74564316191. The next prime is 74564316287. The reversal of 74564316245 is 54261346547.

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 17932691569 + 56631624676 = 133913^2 + 237974^2 .

It is a cyclic number.

It is not a de Polignac number, because 74564316245 - 2⁶ = 74564316181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74564316245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7456431620 + ... + 7456431629.

It is an arithmetic number, because the mean of its divisors is an integer number (22369294875).

Almost surely, 2^74564316245 is an apocalyptic number.

It is an amenable number.

74564316245 is a deficient number, since it is larger than the sum of its proper divisors (14912863255).

74564316245 is a wasteful number, since it uses less digits than its factorization.

74564316245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14912863254.

The product of its digits is 2419200, while the sum is 47.

The spelling of 74564316245 in words is "seventy-four billion, five hundred sixty-four million, three hundred sixteen thousand, two hundred forty-five".