555561000165555 has 64 divisors (see below), whose sum is σ = 991833996441600. Its totient is φ = 295048295055360.

The previous prime is 555561000165467. The next prime is 555561000165583.

555561000165555 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 610 + 0 + 0 + 16 + 5 + 5 + 5 + 5 = 666.

555561000165555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 555561000165555 - 2¹⁴ = 555561000149171 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 890557107 + ... + 891180723.

It is an arithmetic number, because the mean of its divisors is an integer number (15497406194400).

Almost surely, 2^{555561000165555} is an apocalyptic number.

555561000165555 is a deficient number, since it is larger than the sum of its proper divisors (436272996276045).

555561000165555 is a wasteful number, since it uses less digits than its factorization.

555561000165555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651481 (or 651475 counting only the distinct ones).

The product of its (nonzero) digits is 14062500, while the sum is 54.

The spelling of 555561000165555 in words is "five hundred fifty-five trillion, five hundred sixty-one billion, one hundred sixty-five thousand, five hundred fifty-five".