55161002216 has 8 divisors (see below), whose sum is σ = 103426879170. Its totient is φ = 27580501104.

The previous prime is 55161002207. The next prime is 55161002227. The reversal of 55161002216 is 61220016155.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 54639062500 + 521939716 = 233750^2 + 22846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 3447562631 + ... + 3447562646.

Almost surely, 2^55161002216 is an apocalyptic number.

It is an amenable number.

55161002216 is a deficient number, since it is larger than the sum of its proper divisors (48265876954).

55161002216 is a wasteful number, since it uses less digits than its factorization.

55161002216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6895125283 (or 6895125279 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 55161002216 in words is "fifty-five billion, one hundred sixty-one million, two thousand, two hundred sixteen".