55671217655 has 4 divisors (see below), whose sum is σ = 66805461192. Its totient is φ = 44536974120.

The previous prime is 55671217643. The next prime is 55671217673.

55671217655 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55671217655 - 2²² = 55667023351 is a prime.

It is a Duffinian number.

It is a congruent 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, 5567121761 + ... + 5567121770.

It is an arithmetic number, because the mean of its divisors is an integer number (16701365298).

Almost surely, 2^55671217655 is an apocalyptic number.

55671217655 is a deficient number, since it is larger than the sum of its proper divisors (11134243537).

55671217655 is a wasteful number, since it uses less digits than its factorization.

55671217655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134243536.

The product of its digits is 2205000, while the sum is 50.

The spelling of 55671217655 in words is "fifty-five billion, six hundred seventy-one million, two hundred seventeen thousand, six hundred fifty-five".