20106542263 has 2 divisors, whose sum is σ = 20106542264. Its totient is φ = 20106542262.

The previous prime is 20106542249. The next prime is 20106542279. The reversal of 20106542263 is 36224560102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20106542263 - 2⁵ = 20106542231 is a prime.

It is a super-2 number, since 2×20106542263² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20106542233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053271131 + 10053271132.

It is an arithmetic number, because the mean of its divisors is an integer number (10053271132).

Almost surely, 2^20106542263 is an apocalyptic number.

20106542263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20106542263 is an equidigital number, since it uses as much as digits as its factorization.

20106542263 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 20106542263 in words is "twenty billion, one hundred six million, five hundred forty-two thousand, two hundred sixty-three".