75554755745557 has 4 divisors (see below), whose sum is σ = 82423369904256. Its totient is φ = 68686141586860.

The previous prime is 75554755745537. The next prime is 75554755745561.

75554755745557 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-75554755745557 is a prime.

It is a super-2 number, since 2×75554755745557² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75554755745537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434307079333 + ... + 3434307079354.

It is an arithmetic number, because the mean of its divisors is an integer number (20605842476064).

Almost surely, 2^{75554755745557} is an apocalyptic number.

It is an amenable number.

75554755745557 is a deficient number, since it is larger than the sum of its proper divisors (6868614158699).

75554755745557 is a wasteful number, since it uses less digits than its factorization.

75554755745557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868614158698.

The product of its digits is 15006250000, while the sum is 76.

The spelling of 75554755745557 in words is "seventy-five trillion, five hundred fifty-four billion, seven hundred fifty-five million, seven hundred forty-five thousand, five hundred fifty-seven".