55105005645 has 96 divisors (see below), whose sum is σ = 103979715840. Its totient is φ = 27684270720.

The previous prime is 55105005619. The next prime is 55105005667. The reversal of 55105005645 is 54650050155.

55105005645 is a `hidden beast` number, since 5 + 5 + 1 + 0 + 5 + 0 + 0 + 5 + 645 = 666.

It is not a de Polignac number, because 55105005645 - 2⁹ = 55105005133 is a prime.

It is a super-3 number, since 3×55105005645³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8817912 + ... + 8824158.

It is an arithmetic number, because the mean of its divisors is an integer number (1083122040).

Almost surely, 2^55105005645 is an apocalyptic number.

It is an amenable number.

55105005645 is a deficient number, since it is larger than the sum of its proper divisors (48874710195).

55105005645 is a wasteful number, since it uses less digits than its factorization.

55105005645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480 (or 6455 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 55105005645 in words is "fifty-five billion, one hundred five million, five thousand, six hundred forty-five".