55755116661 has 16 divisors (see below), whose sum is σ = 77654862720. Its totient is φ = 35516162880.

The previous prime is 55755116647. The next prime is 55755116663. The reversal of 55755116661 is 16661155755.

It is not a de Polignac number, because 55755116661 - 2¹³ = 55755108469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55755116661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55755116663) 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 15 ways as a sum of consecutive naturals, for example, 364426 + ... + 494283.

It is an arithmetic number, because the mean of its divisors is an integer number (4853428920).

Almost surely, 2^55755116661 is an apocalyptic number.

It is an amenable number.

55755116661 is a deficient number, since it is larger than the sum of its proper divisors (21899746059).

55755116661 is a wasteful number, since it uses less digits than its factorization.

55755116661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859676.

The product of its digits is 945000, while the sum is 48.

The spelling of 55755116661 in words is "fifty-five billion, seven hundred fifty-five million, one hundred sixteen thousand, six hundred sixty-one".