20106251353 has 2 divisors, whose sum is σ = 20106251354. Its totient is φ = 20106251352.

The previous prime is 20106251351. The next prime is 20106251357. The reversal of 20106251353 is 35315260102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13514760009 + 6591491344 = 116253^2 + 81188^2 .

It is a cyclic number.

It is not a de Polignac number, because 20106251353 - 2¹ = 20106251351 is a prime.

It is a super-2 number, since 2×20106251353² (a number of 21 digits) contains 22 as substring.

Together with 20106251351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20106251351) 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, 10053125676 + 10053125677.

It is an arithmetic number, because the mean of its divisors is an integer number (10053125677).

Almost surely, 2^20106251353 is an apocalyptic number.

It is an amenable number.

20106251353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20106251353 is an equidigital number, since it uses as much as digits as its factorization.

20106251353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 20106251353 in words is "twenty billion, one hundred six million, two hundred fifty-one thousand, three hundred fifty-three".