20117406043 has 6 divisors (see below), whose sum is σ = 23401880556. Its totient is φ = 17243490852.

The previous prime is 20117406031. The next prime is 20117406061. The reversal of 20117406043 is 34060471102.

It is not a de Polignac number, because 20117406043 - 2¹³ = 20117397851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117406013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205279605 + ... + 205279702.

It is an arithmetic number, because the mean of its divisors is an integer number (3900313426).

Almost surely, 2^20117406043 is an apocalyptic number.

20117406043 is a deficient number, since it is larger than the sum of its proper divisors (3284474513).

20117406043 is an equidigital number, since it uses as much as digits as its factorization.

20117406043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410559321 (or 410559314 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 20117406043 its reverse (34060471102), we get a palindrome (54177877145).

The spelling of 20117406043 in words is "twenty billion, one hundred seventeen million, four hundred six thousand, forty-three".