55121376005664 has 96 divisors (see below), whose sum is σ = 152060163393600. Its totient is φ = 17461454072832.

The previous prime is 55121376005623. The next prime is 55121376005677. The reversal of 55121376005664 is 46650067312155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180293839 + ... + 180599310.

It is an arithmetic number, because the mean of its divisors is an integer number (1583960035350).

Almost surely, 2^{55121376005664} is an apocalyptic number.

It is an amenable number.

55121376005664 is an abundant number, since it is smaller than the sum of its proper divisors (96938787387936).

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

55121376005664 is a wasteful number, since it uses less digits than its factorization.

55121376005664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360893242 (or 360893234 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 55121376005664 in words is "fifty-five trillion, one hundred twenty-one billion, three hundred seventy-six million, five thousand, six hundred sixty-four".