55142813818678 has 4 divisors (see below), whose sum is σ = 82714220728020. Its totient is φ = 27571406909338.

The previous prime is 55142813818661. The next prime is 55142813818691. The reversal of 55142813818678 is 87681831824155.

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

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13785703454668 + ... + 13785703454671.

It is an arithmetic number, because the mean of its divisors is an integer number (20678555182005).

Almost surely, 2^{55142813818678} is an apocalyptic number.

55142813818678 is a deficient number, since it is larger than the sum of its proper divisors (27571406909342).

55142813818678 is a wasteful number, since it uses less digits than its factorization.

55142813818678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27571406909341.

The product of its digits is 103219200, while the sum is 67.

The spelling of 55142813818678 in words is "fifty-five trillion, one hundred forty-two billion, eight hundred thirteen million, eight hundred eighteen thousand, six hundred seventy-eight".