55580518178138 has 8 divisors (see below), whose sum is σ = 83370809089620. Its totient is φ = 27790248481600.

The previous prime is 55580518178117. The next prime is 55580518178197. The reversal of 55580518178138 is 83187181508555.

55580518178138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52431110710489 + 3149407467649 = 7240933^2 + 1774657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55580518178138² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6499268 + ... + 12385536.

Almost surely, 2^{55580518178138} is an apocalyptic number.

55580518178138 is a deficient number, since it is larger than the sum of its proper divisors (27790290911482).

55580518178138 is a wasteful number, since it uses less digits than its factorization.

55580518178138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10607472.

The product of its (nonzero) digits is 53760000, while the sum is 65.

The spelling of 55580518178138 in words is "fifty-five trillion, five hundred eighty billion, five hundred eighteen million, one hundred seventy-eight thousand, one hundred thirty-eight".