55620615205 has 16 divisors (see below), whose sum is σ = 66846850560. Its totient is φ = 44428478848.

The previous prime is 55620615179. The next prime is 55620615233. The reversal of 55620615205 is 50251602655.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55620615205 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, 12613041 + ... + 12617449.

It is an arithmetic number, because the mean of its divisors is an integer number (4177928160).

Almost surely, 2^55620615205 is an apocalyptic number.

It is an amenable number.

55620615205 is a deficient number, since it is larger than the sum of its proper divisors (11226235355).

55620615205 is a wasteful number, since it uses less digits than its factorization.

55620615205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7700.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 55620615205 in words is "fifty-five billion, six hundred twenty million, six hundred fifteen thousand, two hundred five".