20427000851 has 2 divisors, whose sum is σ = 20427000852. Its totient is φ = 20427000850.

The previous prime is 20427000829. The next prime is 20427000857. The reversal of 20427000851 is 15800072402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20427000851 - 2¹⁴ = 20426984467 is a prime.

It is not a weakly prime, because it can be changed into another prime (20427000857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213500425 + 10213500426.

It is an arithmetic number, because the mean of its divisors is an integer number (10213500426).

Almost surely, 2^20427000851 is an apocalyptic number.

20427000851 is a deficient number, since it is larger than the sum of its proper divisors (1).

20427000851 is an equidigital number, since it uses as much as digits as its factorization.

20427000851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 20427000851 in words is "twenty billion, four hundred twenty-seven million, eight hundred fifty-one", and thus it is an aban number.