55005505055505 has 12 divisors (see below), whose sum is σ = 95342875429620. Its totient is φ = 29336269362912.

The previous prime is 55005505055503. The next prime is 55005505055509. The reversal of 55005505055505 is 50555050550055.

It can be written as a sum of positive squares in 2 ways, for example, as 27176630560641 + 27828874494864 = 5213121^2 + 5275308^2 .

It is not a de Polignac number, because 55005505055505 - 2¹ = 55005505055503 is a prime.

It is a super-2 number, since 2×55005505055505² (a number of 28 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: 1222344556789 = 55005505055505 / (5 + 5 + 0 + 0 + 5 + 5 + 0 + 5 + 0 + 5 + 5 + 5 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (55005505055503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 611172278350 + ... + 611172278439.

It is an arithmetic number, because the mean of its divisors is an integer number (7945239619135).

Almost surely, 2^{55005505055505} is an apocalyptic number.

It is an amenable number.

55005505055505 is a deficient number, since it is larger than the sum of its proper divisors (40337370374115).

55005505055505 is a wasteful number, since it uses less digits than its factorization.

55005505055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222344556800 (or 1222344556797 counting only the distinct ones).

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

The spelling of 55005505055505 in words is "fifty-five trillion, five billion, five hundred five million, fifty-five thousand, five hundred five".