55216565634 has 8 divisors (see below), whose sum is σ = 110433131280. Its totient is φ = 18405521876.

The previous prime is 55216565633. The next prime is 55216565639. The reversal of 55216565634 is 43656561255.

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

55216565634 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (55216565633) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4601380464 + ... + 4601380475.

It is an arithmetic number, because the mean of its divisors is an integer number (13804141410).

Almost surely, 2^55216565634 is an apocalyptic number.

55216565634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55216565634 is a wasteful number, since it uses less digits than its factorization.

55216565634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9202760944.

The product of its digits is 3240000, while the sum is 48.

The spelling of 55216565634 in words is "fifty-five billion, two hundred sixteen million, five hundred sixty-five thousand, six hundred thirty-four".