20106375647 has 2 divisors, whose sum is σ = 20106375648. Its totient is φ = 20106375646.

The previous prime is 20106375629. The next prime is 20106375661. The reversal of 20106375647 is 74657360102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20106375647 - 2²⁸ = 19837940191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103375647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053187823 + 10053187824.

It is an arithmetic number, because the mean of its divisors is an integer number (10053187824).

Almost surely, 2^20106375647 is an apocalyptic number.

20106375647 is a deficient number, since it is larger than the sum of its proper divisors (1).

20106375647 is an equidigital number, since it uses as much as digits as its factorization.

20106375647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 20106375647 in words is "twenty billion, one hundred six million, three hundred seventy-five thousand, six hundred forty-seven".