55416660817 has 8 divisors (see below), whose sum is σ = 63335001600. Its totient is φ = 47498738784.

The previous prime is 55416660811. The next prime is 55416660823. The reversal of 55416660817 is 71806661455.

55416660817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55416660811) and next prime (55416660823).

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

It is not a de Polignac number, because 55416660817 - 2¹⁵ = 55416628049 is a prime.

It is a super-2 number, since 2×55416660817² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55416660811) 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, 266784 + ... + 426622.

It is an arithmetic number, because the mean of its divisors is an integer number (7916875200).

Almost surely, 2^55416660817 is an apocalyptic number.

It is an amenable number.

55416660817 is a deficient number, since it is larger than the sum of its proper divisors (7918340783).

55416660817 is a wasteful number, since it uses less digits than its factorization.

55416660817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209375.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 55416660817 in words is "fifty-five billion, four hundred sixteen million, six hundred sixty thousand, eight hundred seventeen".