55424434213985 has 8 divisors (see below), whose sum is σ = 66687630230760. Its totient is φ = 44220674588544.

The previous prime is 55424434213913. The next prime is 55424434213987. The reversal of 55424434213985 is 58931243442455.

It can be written as a sum of positive squares in 4 ways, for example, as 6876389776 + 55417557824209 = 82924^2 + 7444297^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55424434213985 - 2¹⁸ = 55424433951841 is a prime.

It is a super-3 number, since 3×55424434213985³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55424434213987) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 14859095780 + ... + 14859099509.

It is an arithmetic number, because the mean of its divisors is an integer number (8335953778845).

Almost surely, 2^{55424434213985} is an apocalyptic number.

It is an amenable number.

55424434213985 is a deficient number, since it is larger than the sum of its proper divisors (11263196016775).

55424434213985 is a wasteful number, since it uses less digits than its factorization.

55424434213985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29718195667.

The product of its digits is 82944000, while the sum is 59.

The spelling of 55424434213985 in words is "fifty-five trillion, four hundred twenty-four billion, four hundred thirty-four million, two hundred thirteen thousand, nine hundred eighty-five".