74523534549 has 4 divisors (see below), whose sum is σ = 99364712736. Its totient is φ = 49682356364.

The previous prime is 74523534539. The next prime is 74523534551. The reversal of 74523534549 is 94543532547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74523534549 - 2¹⁵ = 74523501781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74523534509) 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, 12420589089 + ... + 12420589094.

It is an arithmetic number, because the mean of its divisors is an integer number (24841178184).

Almost surely, 2^74523534549 is an apocalyptic number.

It is an amenable number.

74523534549 is a deficient number, since it is larger than the sum of its proper divisors (24841178187).

74523534549 is a wasteful number, since it uses less digits than its factorization.

74523534549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24841178186.

The product of its digits is 9072000, while the sum is 51.

The spelling of 74523534549 in words is "seventy-four billion, five hundred twenty-three million, five hundred thirty-four thousand, five hundred forty-nine".