55740075405217 has 4 divisors (see below), whose sum is σ = 63702943320256. Its totient is φ = 47777207490180.

The previous prime is 55740075405197. The next prime is 55740075405247. The reversal of 55740075405217 is 71250457004755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55740075405217 - 2⁷ = 55740075405089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55740075405247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3981433957509 + ... + 3981433957522.

It is an arithmetic number, because the mean of its divisors is an integer number (15925735830064).

Almost surely, 2^{55740075405217} is an apocalyptic number.

It is an amenable number.

55740075405217 is a deficient number, since it is larger than the sum of its proper divisors (7962867915039).

55740075405217 is an equidigital number, since it uses as much as digits as its factorization.

55740075405217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962867915038.

The product of its (nonzero) digits is 6860000, while the sum is 52.

The spelling of 55740075405217 in words is "fifty-five trillion, seven hundred forty billion, seventy-five million, four hundred five thousand, two hundred seventeen".