555549626945555 has 48 divisors (see below), whose sum is σ = 747509898969792. Its totient is φ = 395929909689600.

The previous prime is 555549626945543. The next prime is 555549626945561.

555549626945555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 555549626945555 - 2¹⁶ = 555549626880019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 555549626945555.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15773762 + ... + 36876968.

It is an arithmetic number, because the mean of its divisors is an integer number (15573122895204).

Almost surely, 2^{555549626945555} is an apocalyptic number.

555549626945555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

555549626945555 is a deficient number, since it is larger than the sum of its proper divisors (191960272024237).

555549626945555 is a wasteful number, since it uses less digits than its factorization.

555549626945555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21104108 (or 21104097 counting only the distinct ones).

The product of its digits is 36450000000, while the sum is 80.

The spelling of 555549626945555 in words is "five hundred fifty-five trillion, five hundred forty-nine billion, six hundred twenty-six million, nine hundred forty-five thousand, five hundred fifty-five".