55806471581445 has 48 divisors (see below), whose sum is σ = 104172944449392. Its totient is φ = 27473727329280.

The previous prime is 55806471581407. The next prime is 55806471581453. The reversal of 55806471581445 is 54418517460855.

55806471581445 is a `hidden beast` number, since 5 + 5 + 8 + 0 + 6 + 4 + 7 + 1 + 581 + 4 + 45 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 8449585071489 + 47356886509956 = 2906817^2 + 6881634^2 .

It is not a de Polignac number, because 55806471581445 - 2⁷ = 55806471581317 is a prime.

It is a super-2 number, since 2×55806471581445² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86469687 + ... + 87112683.

It is an arithmetic number, because the mean of its divisors is an integer number (2170269676029).

Almost surely, 2^{55806471581445} is an apocalyptic number.

It is an amenable number.

55806471581445 is a deficient number, since it is larger than the sum of its proper divisors (48366472867947).

55806471581445 is a wasteful number, since it uses less digits than its factorization.

55806471581445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791382 (or 791379 counting only the distinct ones).

The product of its (nonzero) digits is 107520000, while the sum is 63.

The spelling of 55806471581445 in words is "fifty-five trillion, eight hundred six billion, four hundred seventy-one million, five hundred eighty-one thousand, four hundred forty-five".