55565808783407 has 4 divisors (see below), whose sum is σ = 59840101766760. Its totient is φ = 51291515800056.

The previous prime is 55565808783391. The next prime is 55565808783409. The reversal of 55565808783407 is 70438780856555.

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

It is a cyclic number.

It is not a de Polignac number, because 55565808783407 - 2⁴ = 55565808783391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55565808783409) 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, 2137146491657 + ... + 2137146491682.

It is an arithmetic number, because the mean of its divisors is an integer number (14960025441690).

Almost surely, 2^{55565808783407} is an apocalyptic number.

55565808783407 is a deficient number, since it is larger than the sum of its proper divisors (4274292983353).

55565808783407 is a wasteful number, since it uses less digits than its factorization.

55565808783407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274292983352.

The product of its (nonzero) digits is 1128960000, while the sum is 71.

The spelling of 55565808783407 in words is "fifty-five trillion, five hundred sixty-five billion, eight hundred eight million, seven hundred eighty-three thousand, four hundred seven".