55665561105 has 96 divisors (see below), whose sum is σ = 121360861440. Its totient is φ = 22928855040.

The previous prime is 55665561079. The next prime is 55665561121. The reversal of 55665561105 is 50116556655.

It is not a de Polignac number, because 55665561105 - 2⁸ = 55665560849 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 320461 + ... + 462629.

It is an arithmetic number, because the mean of its divisors is an integer number (1264175640).

Almost surely, 2^55665561105 is an apocalyptic number.

55665561105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55665561105 is an abundant number, since it is smaller than the sum of its proper divisors (65695300335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55665561105 is a wasteful number, since it uses less digits than its factorization.

55665561105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142311 (or 142308 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 55665561105 in words is "fifty-five billion, six hundred sixty-five million, five hundred sixty-one thousand, one hundred five".