55117200061 has 16 divisors (see below), whose sum is σ = 68864739840. Its totient is φ = 42856472880.

The previous prime is 55117200053. The next prime is 55117200067. The reversal of 55117200061 is 16000271155.

It is a cyclic number.

It is not a de Polignac number, because 55117200061 - 2³ = 55117200053 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 (55117200067) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 730431 + ... + 802348.

It is an arithmetic number, because the mean of its divisors is an integer number (4304046240).

Almost surely, 2^55117200061 is an apocalyptic number.

It is an amenable number.

55117200061 is a deficient number, since it is larger than the sum of its proper divisors (13747539779).

55117200061 is a wasteful number, since it uses less digits than its factorization.

55117200061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533264.

The product of its (nonzero) digits is 2100, while the sum is 28.

The spelling of 55117200061 in words is "fifty-five billion, one hundred seventeen million, two hundred thousand, sixty-one".