20383484117 has 2 divisors, whose sum is σ = 20383484118. Its totient is φ = 20383484116.

The previous prime is 20383484087. The next prime is 20383484119. The reversal of 20383484117 is 71148438302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15195739441 + 5187744676 = 123271^2 + 72026^2 .

It is a cyclic number.

It is not a de Polignac number, because 20383484117 - 2⁶ = 20383484053 is a prime.

Together with 20383484119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20383484119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10191742058 + 10191742059.

It is an arithmetic number, because the mean of its divisors is an integer number (10191742059).

Almost surely, 2^20383484117 is an apocalyptic number.

It is an amenable number.

20383484117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20383484117 is an equidigital number, since it uses as much as digits as its factorization.

20383484117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 20383484117 in words is "twenty billion, three hundred eighty-three million, four hundred eighty-four thousand, one hundred seventeen".