5577811655121 has 6 divisors (see below), whose sum is σ = 8056839057410. Its totient is φ = 3718541103408.

The previous prime is 5577811655113. The next prime is 5577811655239. The reversal of 5577811655121 is 1215561187755.

5577811655121 is a `hidden beast` number, since 5 + 5 + 7 + 7 + 8 + 116 + 5 + 512 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2966885676225 + 2610925978896 = 1722465^2 + 1615836^2 .

It is not a de Polignac number, because 5577811655121 - 2³ = 5577811655113 is a prime.

It is a super-2 number, since 2×5577811655121² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5577811655111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 309878425276 + ... + 309878425293.

Almost surely, 2^{5577811655121} is an apocalyptic number.

It is an amenable number.

5577811655121 is a deficient number, since it is larger than the sum of its proper divisors (2479027402289).

5577811655121 is a wasteful number, since it uses less digits than its factorization.

5577811655121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619756850575 (or 619756850572 counting only the distinct ones).

The product of its digits is 2940000, while the sum is 54.

The spelling of 5577811655121 in words is "five trillion, five hundred seventy-seven billion, eight hundred eleven million, six hundred fifty-five thousand, one hundred twenty-one".