55643634655 has 8 divisors (see below), whose sum is σ = 76311270432. Its totient is φ = 38155635168.

The previous prime is 55643634653. The next prime is 55643634679.

55643634655 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55643634655 - 2¹ = 55643634653 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 (55643634653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794909032 + ... + 794909101.

It is an arithmetic number, because the mean of its divisors is an integer number (9538908804).

Almost surely, 2^55643634655 is an apocalyptic number.

55643634655 is a deficient number, since it is larger than the sum of its proper divisors (20667635777).

55643634655 is a wasteful number, since it uses less digits than its factorization.

55643634655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589818145.

The product of its digits is 19440000, while the sum is 52.

The spelling of 55643634655 in words is "fifty-five billion, six hundred forty-three million, six hundred thirty-four thousand, six hundred fifty-five".