20346640616055 has 16 divisors (see below), whose sum is σ = 35058826908000. Its totient is φ = 10016807687808.

The previous prime is 20346640616033. The next prime is 20346640616083. The reversal of 20346640616055 is 55061604664302.

It is not a de Polignac number, because 20346640616055 - 2³¹ = 20344493132407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20346640615995 and 20346640616013.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52170873180 + ... + 52170873569.

It is an arithmetic number, because the mean of its divisors is an integer number (2191176681750).

Almost surely, 2^{20346640616055} is an apocalyptic number.

20346640616055 is a deficient number, since it is larger than the sum of its proper divisors (14712186291945).

20346640616055 is a wasteful number, since it uses less digits than its factorization.

20346640616055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104341746770.

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 20346640616055 in words is "twenty trillion, three hundred forty-six billion, six hundred forty million, six hundred sixteen thousand, fifty-five".