54021565320516 has 36 divisors (see below), whose sum is σ = 136559606106924. Its totient is φ = 18006516734400.

The previous prime is 54021565320431. The next prime is 54021565320529. The reversal of 54021565320516 is 61502356512045.

54021565320516 is a `hidden beast` number, since 5 + 4 + 0 + 2 + 1 + 565 + 32 + 0 + 51 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41042550350916 + 12979014969600 = 6406446^2 + 3602640^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 27008775 + ... + 28939886.

It is an arithmetic number, because the mean of its divisors is an integer number (3793322391859).

Almost surely, 2^{54021565320516} is an apocalyptic number.

It is an amenable number.

54021565320516 is an abundant number, since it is smaller than the sum of its proper divisors (82538040786408).

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

54021565320516 is a wasteful number, since it uses less digits than its factorization.

54021565320516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55975492 (or 55975487 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 54021565320516 in words is "fifty-four trillion, twenty-one billion, five hundred sixty-five million, three hundred twenty thousand, five hundred sixteen".