55640004655 has 8 divisors (see below), whose sum is σ = 66783863952. Its totient is φ = 44501431488.

The previous prime is 55640004631. The next prime is 55640004709.

55640004655 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 55640004655 - 2⁹ = 55640004143 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298337 + ... + 1340506.

It is an arithmetic number, because the mean of its divisors is an integer number (8347982994).

Almost surely, 2^55640004655 is an apocalyptic number.

55640004655 is a deficient number, since it is larger than the sum of its proper divisors (11143859297).

55640004655 is a wasteful number, since it uses less digits than its factorization.

55640004655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643065.

The product of its (nonzero) digits is 360000, while the sum is 40.

It can be divided in two parts, 5564000 and 4655, that added together give a palindrome (5568655).

The spelling of 55640004655 in words is "fifty-five billion, six hundred forty million, four thousand, six hundred fifty-five".