355555577777779 has 4 divisors (see below), whose sum is σ = 367816114942560. Its totient is φ = 343295040613000.

The previous prime is 355555577777767. The next prime is 355555577777789. The reversal of 355555577777779 is 977777775555553.

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

It is a cyclic number.

It is not a de Polignac number, because 355555577777779 - 2⁵ = 355555577777747 is a prime.

It is a pancake number, because a pancake can be divided into 355555577777779 parts by 26666667 straight cuts.

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 = 355555577777693 and 355555577777702.

It is not an unprimeable number, because it can be changed into a prime (355555577777789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6130268582347 + ... + 6130268582404.

It is an arithmetic number, because the mean of its divisors is an integer number (91954028735640).

Almost surely, 2^{355555577777779} is an apocalyptic number.

355555577777779 is a deficient number, since it is larger than the sum of its proper divisors (12260537164781).

355555577777779 is a wasteful number, since it uses less digits than its factorization.

355555577777779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12260537164780.

The product of its digits is 347432203125, while the sum is 91.

The spelling of 355555577777779 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-nine".