355555577777777 has 8 divisors (see below), whose sum is σ = 382906394529960. Its totient is φ = 328204816410240.

The previous prime is 355555577777767. The next prime is 355555577777789. The reversal of 355555577777777 is 777777775555553.

It can be written as a sum of positive squares in 4 ways, for example, as 43661646428416 + 311893931349361 = 6607696^2 + 17660519^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 355555577777777 - 2¹⁰ = 355555577776753 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 355555577777692 and 355555577777701.

It is not an unprimeable number, because it can be changed into a prime (355555577777737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2 + ... + 26666667.

It is an arithmetic number, because the mean of its divisors is an integer number (47863299316245).

Almost surely, 2^{355555577777777} is an apocalyptic number.

It is an amenable number.

355555577777777 is a deficient number, since it is larger than the sum of its proper divisors (27350816752183).

355555577777777 is a wasteful number, since it uses less digits than its factorization.

355555577777777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27692323.

The product of its digits is 270225046875, while the sum is 89.

It can be divided in two parts, 35555557 and 7777777, that added together give a palindrome (43333334).

The spelling of 355555577777777 in words is "three hundred fifty-five trillion, five hundred fifty-five billion, five hundred seventy-seven million, seven hundred seventy-seven thousand, seven hundred seventy-seven".