55552320406121 has 96 divisors (see below), whose sum is σ = 73386133094400. Its totient is φ = 41083251580800.

The previous prime is 55552320406103. The next prime is 55552320406123. The reversal of 55552320406121 is 12160402325555.

It is not a de Polignac number, because 55552320406121 - 2¹⁴ = 55552320389737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55552320406123) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 5494240856 + ... + 5494250966.

It is an arithmetic number, because the mean of its divisors is an integer number (764438886400).

Almost surely, 2^{55552320406121} is an apocalyptic number.

It is an amenable number.

55552320406121 is a deficient number, since it is larger than the sum of its proper divisors (17833812688279).

55552320406121 is a wasteful number, since it uses less digits than its factorization.

55552320406121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12331 (or 12320 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 55552320406121 in words is "fifty-five trillion, five hundred fifty-two billion, three hundred twenty million, four hundred six thousand, one hundred twenty-one".