20676406087 has 2 divisors, whose sum is σ = 20676406088. Its totient is φ = 20676406086.

The previous prime is 20676406073. The next prime is 20676406169. The reversal of 20676406087 is 78060467602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20676406087 - 2¹¹ = 20676404039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20676406687) 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, 10338203043 + 10338203044.

It is an arithmetic number, because the mean of its divisors is an integer number (10338203044).

Almost surely, 2^20676406087 is an apocalyptic number.

20676406087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20676406087 is an equidigital number, since it uses as much as digits as its factorization.

20676406087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 20676406087 in words is "twenty billion, six hundred seventy-six million, four hundred six thousand, eighty-seven".