55126268661 has 16 divisors (see below), whose sum is σ = 77923332608. Its totient is φ = 34604107200.

The previous prime is 55126268657. The next prime is 55126268663. The reversal of 55126268661 is 16686262155.

It is not a de Polignac number, because 55126268661 - 2² = 55126268657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55126268661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55126268663) 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, 8006770 + ... + 8013651.

It is an arithmetic number, because the mean of its divisors is an integer number (4870208288).

Almost surely, 2^55126268661 is an apocalyptic number.

It is an amenable number.

55126268661 is a deficient number, since it is larger than the sum of its proper divisors (22797063947).

55126268661 is a wasteful number, since it uses less digits than its factorization.

55126268661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16020492.

The product of its digits is 1036800, while the sum is 48.

The spelling of 55126268661 in words is "fifty-five billion, one hundred twenty-six million, two hundred sixty-eight thousand, six hundred sixty-one".