20106562423 has 2 divisors, whose sum is σ = 20106562424. Its totient is φ = 20106562422.

The previous prime is 20106562409. The next prime is 20106562457. The reversal of 20106562423 is 32426560102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20106562423 - 2⁹ = 20106561911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20106062423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053281211 + 10053281212.

It is an arithmetic number, because the mean of its divisors is an integer number (10053281212).

Almost surely, 2^20106562423 is an apocalyptic number.

20106562423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20106562423 is an equidigital number, since it uses as much as digits as its factorization.

20106562423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 20106562423 in words is "twenty billion, one hundred six million, five hundred sixty-two thousand, four hundred twenty-three".