555777777555 has 576 divisors, whose sum is σ = 1376594279424. Its totient is φ = 200172902400.

The previous prime is 555777777547. The next prime is 555777777557.

555777777555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 555777777555 - 2³ = 555777777547 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (555777777557) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 1601664892 + ... + 1601665238.

It is an arithmetic number, because the mean of its divisors is an integer number (2389920624).

Almost surely, 2^555777777555 is an apocalyptic number.

555777777555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

555777777555 is an abundant number, since it is smaller than the sum of its proper divisors (820816501869).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555777777555 is a wasteful number, since it uses less digits than its factorization.

555777777555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 454 counting only the distinct ones).

The product of its digits is 1838265625, while the sum is 72.

The spelling of 555777777555 in words is "five hundred fifty-five billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, five hundred fifty-five".