9555555555557 has 48 divisors (see below), whose sum is σ = 10690019395440. Its totient is φ = 8533395256320.

The previous prime is 9555555555547. The next prime is 9555555555563. The reversal of 9555555555557 is 7555555555559.

It can be written as a sum of positive squares in 8 ways, for example, as 1909700122561 + 7645855432996 = 1381919^2 + 2765114^2 .

It is not a de Polignac number, because 9555555555557 - 2⁴ = 9555555555541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9555555555527) 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 47 ways as a sum of consecutive naturals, for example, 3284823419 + ... + 3284826327.

It is an arithmetic number, because the mean of its divisors is an integer number (222708737405).

Almost surely, 2^{9555555555557} is an apocalyptic number.

It is an amenable number.

9555555555557 is a deficient number, since it is larger than the sum of its proper divisors (1134463839883).

9555555555557 is a wasteful number, since it uses less digits than its factorization.

9555555555557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374 (or 4363 counting only the distinct ones).

The product of its digits is 3076171875, while the sum is 71.

The spelling of 9555555555557 in words is "nine trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-seven".