55186685266 has 4 divisors (see below), whose sum is σ = 82780027902. Its totient is φ = 27593342632.

The previous prime is 55186685261. The next prime is 55186685291. The reversal of 55186685266 is 66258668155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52179808041 + 3006877225 = 228429^2 + 54835^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55186685266.

It is not an unprimeable number, because it can be changed into a prime (55186685261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13796671315 + ... + 13796671318.

Almost surely, 2^55186685266 is an apocalyptic number.

55186685266 is a deficient number, since it is larger than the sum of its proper divisors (27593342636).

55186685266 is a wasteful number, since it uses less digits than its factorization.

55186685266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27593342635.

The product of its digits is 20736000, while the sum is 58.

The spelling of 55186685266 in words is "fifty-five billion, one hundred eighty-six million, six hundred eighty-five thousand, two hundred sixty-six".