55464663063221 has 8 divisors (see below), whose sum is σ = 58727519187480. Its totient is φ = 52201832370688.

The previous prime is 55464663063191. The next prime is 55464663063283. The reversal of 55464663063221 is 12236036646455.

It can be written as a sum of positive squares in 4 ways, for example, as 151560721 + 55464511502500 = 12311^2 + 7447450^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55464663063221 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 (55464663093221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1773326 + ... + 10680543.

It is an arithmetic number, because the mean of its divisors is an integer number (7340939898435).

Almost surely, 2^{55464663063221} is an apocalyptic number.

It is an amenable number.

55464663063221 is a deficient number, since it is larger than the sum of its proper divisors (3262856124259).

55464663063221 is a wasteful number, since it uses less digits than its factorization.

55464663063221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12715863.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 55464663063221 in words is "fifty-five trillion, four hundred sixty-four billion, six hundred sixty-three million, sixty-three thousand, two hundred twenty-one".