74469521447 has 4 divisors (see below), whose sum is σ = 75690333336. Its totient is φ = 73248709560.

The previous prime is 74469521407. The next prime is 74469521449. The reversal of 74469521447 is 74412596447.

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

It is a cyclic number.

It is not a de Polignac number, because 74469521447 - 2⁶ = 74469521383 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 (74469521449) 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, 610405853 + ... + 610405974.

It is an arithmetic number, because the mean of its divisors is an integer number (18922583334).

Almost surely, 2^74469521447 is an apocalyptic number.

74469521447 is a deficient number, since it is larger than the sum of its proper divisors (1220811889).

74469521447 is a wasteful number, since it uses less digits than its factorization.

74469521447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220811888.

The product of its digits is 6773760, while the sum is 53.

The spelling of 74469521447 in words is "seventy-four billion, four hundred sixty-nine million, five hundred twenty-one thousand, four hundred forty-seven".