75534243557 has 8 divisors (see below), whose sum is σ = 79522635360. Its totient is φ = 71547142320.

The previous prime is 75534243553. The next prime is 75534243559.

75534243557 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 75534243557 - 2² = 75534243553 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 (75534243553) 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, 201323 + ... + 437720.

It is an arithmetic number, because the mean of its divisors is an integer number (9940329420).

Almost surely, 2^75534243557 is an apocalyptic number.

It is an amenable number.

75534243557 is a deficient number, since it is larger than the sum of its proper divisors (3988391803).

75534243557 is a wasteful number, since it uses less digits than its factorization.

75534243557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645283.

The product of its digits is 8820000, while the sum is 50.

The spelling of 75534243557 in words is "seventy-five billion, five hundred thirty-four million, two hundred forty-three thousand, five hundred fifty-seven".