74534021457 has 8 divisors (see below), whose sum is σ = 113575651776. Its totient is φ = 42590869392.

The previous prime is 74534021449. The next prime is 74534021461. The reversal of 74534021457 is 75412043547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74534021457 - 2³ = 74534021449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74534021437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774619538 + ... + 1774619579.

It is an arithmetic number, because the mean of its divisors is an integer number (14196956472).

Almost surely, 2^74534021457 is an apocalyptic number.

It is an amenable number.

74534021457 is a deficient number, since it is larger than the sum of its proper divisors (39041630319).

74534021457 is a wasteful number, since it uses less digits than its factorization.

74534021457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549239127.

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 74534021457 in words is "seventy-four billion, five hundred thirty-four million, twenty-one thousand, four hundred fifty-seven".