55416666664139 has 4 divisors (see below), whose sum is σ = 60454545451800. Its totient is φ = 50378787876480.

The previous prime is 55416666664103. The next prime is 55416666664187. The reversal of 55416666664139 is 93146666661455.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55416666664139 is a prime.

It is a super-2 number, since 2×55416666664139² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55416666664739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2518939393814 + ... + 2518939393835.

It is an arithmetic number, because the mean of its divisors is an integer number (15113636362950).

Almost surely, 2^{55416666664139} is an apocalyptic number.

55416666664139 is a deficient number, since it is larger than the sum of its proper divisors (5037878787661).

55416666664139 is a wasteful number, since it uses less digits than its factorization.

55416666664139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5037878787660.

The product of its digits is 503884800, while the sum is 68.

The spelling of 55416666664139 in words is "fifty-five trillion, four hundred sixteen billion, six hundred sixty-six million, six hundred sixty-four thousand, one hundred thirty-nine".