5555500439566 has 128 divisors (see below), whose sum is σ = 10508453222400. Its totient is φ = 2139880343040.

The previous prime is 5555500439549. The next prime is 5555500439581. The reversal of 5555500439566 is 6659340055555.

It is a self number, because there is not a number n which added to its sum of digits gives 5555500439566.

It is a congruent number.

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, 5196912880 + ... + 5196913948.

It is an arithmetic number, because the mean of its divisors is an integer number (82097290800).

Almost surely, 2^{5555500439566} is an apocalyptic number.

5555500439566 is a deficient number, since it is larger than the sum of its proper divisors (4952952782834).

5555500439566 is a wasteful number, since it uses less digits than its factorization.

5555500439566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 60750000, while the sum is 58.

The spelling of 5555500439566 in words is "five trillion, five hundred fifty-five billion, five hundred million, four hundred thirty-nine thousand, five hundred sixty-six".