55665656655 has 16 divisors (see below), whose sum is σ = 101788629504. Its totient is φ = 25447157280.

The previous prime is 55665656623. The next prime is 55665656693.

55665656655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55665656655 - 2⁵ = 55665656623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265074451 + ... + 265074660.

It is an arithmetic number, because the mean of its divisors is an integer number (6361789344).

Almost surely, 2^55665656655 is an apocalyptic number.

55665656655 is a deficient number, since it is larger than the sum of its proper divisors (46122972849).

55665656655 is a wasteful number, since it uses less digits than its factorization.

55665656655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530149126.

The product of its digits is 121500000, while the sum is 60.

The spelling of 55665656655 in words is "fifty-five billion, six hundred sixty-five million, six hundred fifty-six thousand, six hundred fifty-five".