20405114707 has 2 divisors, whose sum is σ = 20405114708. Its totient is φ = 20405114706.

The previous prime is 20405114669. The next prime is 20405114713. The reversal of 20405114707 is 70741150402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20405114707 is a prime.

It is not a weakly prime, because it can be changed into another prime (20405114797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10202557353 + 10202557354.

It is an arithmetic number, because the mean of its divisors is an integer number (10202557354).

Almost surely, 2^20405114707 is an apocalyptic number.

20405114707 is a deficient number, since it is larger than the sum of its proper divisors (1).

20405114707 is an equidigital number, since it uses as much as digits as its factorization.

20405114707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The spelling of 20405114707 in words is "twenty billion, four hundred five million, one hundred fourteen thousand, seven hundred seven".