55655667942818 has 4 divisors (see below), whose sum is σ = 83483501914230. Its totient is φ = 27827833971408.

The previous prime is 55655667942811. The next prime is 55655667942851. The reversal of 55655667942818 is 81824976655655.

It is a happy number.

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., 38622160496929 + 17033507445889 = 6214673^2 + 4127167^2 .

It is a super-2 number, since 2×55655667942818² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55655667942811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13913916985703 + ... + 13913916985706.

Almost surely, 2^{55655667942818} is an apocalyptic number.

55655667942818 is a deficient number, since it is larger than the sum of its proper divisors (27827833971412).

55655667942818 is a wasteful number, since it uses less digits than its factorization.

55655667942818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27827833971411.

The product of its digits is 4354560000, while the sum is 77.

The spelling of 55655667942818 in words is "fifty-five trillion, six hundred fifty-five billion, six hundred sixty-seven million, nine hundred forty-two thousand, eight hundred eighteen".