55555011505 has 48 divisors (see below), whose sum is σ = 78382624320. Its totient is φ = 37686999168.

The previous prime is 55555011503. The next prime is 55555011541. The reversal of 55555011505 is 50511055555.

It is not a de Polignac number, because 55555011505 - 2¹ = 55555011503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55555011503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37460494 + ... + 37461976.

It is an arithmetic number, because the mean of its divisors is an integer number (1632971340).

Almost surely, 2^55555011505 is an apocalyptic number.

It is an amenable number.

55555011505 is a deficient number, since it is larger than the sum of its proper divisors (22827612815).

55555011505 is a wasteful number, since it uses less digits than its factorization.

55555011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038 (or 3031 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 37.

The spelling of 55555011505 in words is "fifty-five billion, five hundred fifty-five million, eleven thousand, five hundred five".