74473528247 has 4 divisors (see below), whose sum is σ = 77711507760. Its totient is φ = 71235548736.

The previous prime is 74473528223. The next prime is 74473528253. The reversal of 74473528247 is 74282537447.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74282537447 = 4127 ⋅17999161.

It is a cyclic number.

It is not a de Polignac number, because 74473528247 - 2¹⁴ = 74473511863 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 (74473524247) 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, 1618989722 + ... + 1618989767.

It is an arithmetic number, because the mean of its divisors is an integer number (19427876940).

Almost surely, 2^74473528247 is an apocalyptic number.

74473528247 is a deficient number, since it is larger than the sum of its proper divisors (3237979513).

74473528247 is a wasteful number, since it uses less digits than its factorization.

74473528247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237979512.

The product of its digits is 10536960, while the sum is 53.

The spelling of 74473528247 in words is "seventy-four billion, four hundred seventy-three million, five hundred twenty-eight thousand, two hundred forty-seven".