75124993617 has 10 divisors (see below), whose sum is σ = 112223756018. Its totient is φ = 50083329024.

The previous prime is 75124993591. The next prime is 75124993639. The reversal of 75124993617 is 71639942157.

75124993617 is a `hidden beast` number, since 7 + 5 + 12 + 4 + 9 + 9 + 3 + 617 = 666.

It can be written as a sum of positive squares in only one way, i.e., 71926412481 + 3198581136 = 268191^2 + 56556^2 .

It is not a de Polignac number, because 75124993617 - 2¹² = 75124989521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75124993417) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 463734448 + ... + 463734609.

Almost surely, 2^75124993617 is an apocalyptic number.

It is an amenable number.

75124993617 is a deficient number, since it is larger than the sum of its proper divisors (37098762401).

75124993617 is an equidigital number, since it uses as much as digits as its factorization.

75124993617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927469069 (or 927469060 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 75124993617 in words is "seventy-five billion, one hundred twenty-four million, nine hundred ninety-three thousand, six hundred seventeen".