55005111009 has 12 divisors (see below), whose sum is σ = 79460938752. Its totient is φ = 36665868600.

The previous prime is 55005110981. The next prime is 55005111013. The reversal of 55005111009 is 90011150055.

55005111009 is a `hidden beast` number, since 5 + 500 + 51 + 1 + 100 + 9 = 666.

It is not a de Polignac number, because 55005111009 - 2¹⁷ = 55004979937 is a prime.

It is a super-2 number, since 2×55005111009² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55005111509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266557 + ... + 425514.

It is an arithmetic number, because the mean of its divisors is an integer number (6621744896).

Almost surely, 2^55005111009 is an apocalyptic number.

It is an amenable number.

55005111009 is a deficient number, since it is larger than the sum of its proper divisors (24455827743).

55005111009 is a wasteful number, since it uses less digits than its factorization.

55005111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700908 (or 700905 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The spelling of 55005111009 in words is "fifty-five billion, five million, one hundred eleven thousand, nine".