20859610127 has 2 divisors, whose sum is σ = 20859610128. Its totient is φ = 20859610126.

The previous prime is 20859610091. The next prime is 20859610157. The reversal of 20859610127 is 72101695802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20859610127 is a prime.

It is a super-2 number, since 2×20859610127² (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 (20859610157) 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, 10429805063 + 10429805064.

It is an arithmetic number, because the mean of its divisors is an integer number (10429805064).

Almost surely, 2^20859610127 is an apocalyptic number.

20859610127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20859610127 is an equidigital number, since it uses as much as digits as its factorization.

20859610127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 20859610127 in words is "twenty billion, eight hundred fifty-nine million, six hundred ten thousand, one hundred twenty-seven".