55500505550555 has 32 divisors (see below), whose sum is σ = 72635275120128. Its totient is φ = 40466113228800.

The previous prime is 55500505550551. The next prime is 55500505550561. The reversal of 55500505550555 is 55505550500555.

It is not a de Polignac number, because 55500505550555 - 2² = 55500505550551 is a prime.

It is a super-2 number, since 2×55500505550555² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55500505550551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7800011 + ... + 13108820.

It is an arithmetic number, because the mean of its divisors is an integer number (2269852347504).

Almost surely, 2^{55500505550555} is an apocalyptic number.

55500505550555 is a deficient number, since it is larger than the sum of its proper divisors (17134769569573).

55500505550555 is a wasteful number, since it uses less digits than its factorization.

55500505550555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20909367.

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 55500505550555 in words is "fifty-five trillion, five hundred billion, five hundred five million, five hundred fifty thousand, five hundred fifty-five".