55381688279 has 2 divisors, whose sum is σ = 55381688280. Its totient is φ = 55381688278.

The previous prime is 55381688231. The next prime is 55381688347. The reversal of 55381688279 is 97288618355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55381688279 - 2²⁰ = 55380639703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55381688779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27690844139 + 27690844140.

It is an arithmetic number, because the mean of its divisors is an integer number (27690844140).

Almost surely, 2^55381688279 is an apocalyptic number.

55381688279 is a deficient number, since it is larger than the sum of its proper divisors (1).

55381688279 is an equidigital number, since it uses as much as digits as its factorization.

55381688279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 62.

The spelling of 55381688279 in words is "fifty-five billion, three hundred eighty-one million, six hundred eighty-eight thousand, two hundred seventy-nine".