20346045887 has 2 divisors, whose sum is σ = 20346045888. Its totient is φ = 20346045886.

The previous prime is 20346045877. The next prime is 20346045913. The reversal of 20346045887 is 78854064302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20346045887 - 2¹⁴ = 20346029503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346045877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173022943 + 10173022944.

It is an arithmetic number, because the mean of its divisors is an integer number (10173022944).

Almost surely, 2^20346045887 is an apocalyptic number.

20346045887 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346045887 is an equidigital number, since it uses as much as digits as its factorization.

20346045887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 20346045887 in words is "twenty billion, three hundred forty-six million, forty-five thousand, eight hundred eighty-seven".