55550550555 has 12 divisors (see below), whose sum is σ = 96287621040. Its totient is φ = 29626960272.

The previous prime is 55550550493. The next prime is 55550550569. The reversal of 55550550555 is 55505505555.

It is not a de Polignac number, because 55550550555 - 2¹⁰ = 55550549531 is a prime.

It is a super-2 number, since 2×55550550555² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1234456679 = 55550550555 / (5 + 5 + 5 + 5 + 0 + 5 + 5 + 0 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 55550550555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617228295 + ... + 617228384.

It is an arithmetic number, because the mean of its divisors is an integer number (8023968420).

Almost surely, 2^55550550555 is an apocalyptic number.

55550550555 is a deficient number, since it is larger than the sum of its proper divisors (40737070485).

55550550555 is a wasteful number, since it uses less digits than its factorization.

55550550555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234456690 (or 1234456687 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 55550550555 in words is "fifty-five billion, five hundred fifty million, five hundred fifty thousand, five hundred fifty-five".