755555606555557 has 4 divisors (see below), whose sum is σ = 755578960082380. Its totient is φ = 755532253028736.

The previous prime is 755555606555551. The next prime is 755555606555653.

755555606555557 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 663829762831236 + 91725843724321 = 25764894^2 + 9577361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-755555606555557 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 (755555606555551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11676714882 + ... + 11676779587.

It is an arithmetic number, because the mean of its divisors is an integer number (188894740020595).

Almost surely, 2^{755555606555557} is an apocalyptic number.

It is an amenable number.

755555606555557 is a deficient number, since it is larger than the sum of its proper divisors (23353526823).

755555606555557 is a wasteful number, since it uses less digits than its factorization.

755555606555557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23353526822.

The product of its (nonzero) digits is 17226562500, while the sum is 76.

The spelling of 755555606555557 in words is "seven hundred fifty-five trillion, five hundred fifty-five billion, six hundred six million, five hundred fifty-five thousand, five hundred fifty-seven".