20550115117 has 8 divisors (see below), whose sum is σ = 24867366336. Its totient is φ = 16578244032.

The previous prime is 20550115087. The next prime is 20550115123. The reversal of 20550115117 is 71151105502.

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

It is not a de Polignac number, because 20550115117 - 2¹⁹ = 20549590829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550115717) 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, 86344903 + ... + 86345140.

It is an arithmetic number, because the mean of its divisors is an integer number (3108420792).

Almost surely, 2^20550115117 is an apocalyptic number.

It is an amenable number.

20550115117 is a deficient number, since it is larger than the sum of its proper divisors (4317251219).

20550115117 is a wasteful number, since it uses less digits than its factorization.

20550115117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172690067.

The product of its (nonzero) digits is 1750, while the sum is 28.

The spelling of 20550115117 in words is "twenty billion, five hundred fifty million, one hundred fifteen thousand, one hundred seventeen".