20102085637 has 2 divisors, whose sum is σ = 20102085638. Its totient is φ = 20102085636.

The previous prime is 20102085631. The next prime is 20102085673. The reversal of 20102085637 is 73658020102.

It is a happy number.

Together with next prime (20102085673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12659400196 + 7442685441 = 112514^2 + 86271^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102085637 - 2¹⁵ = 20102052869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102085631) 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, 10051042818 + 10051042819.

It is an arithmetic number, because the mean of its divisors is an integer number (10051042819).

Almost surely, 2^20102085637 is an apocalyptic number.

It is an amenable number.

20102085637 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102085637 is an equidigital number, since it uses as much as digits as its factorization.

20102085637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20102085637 in words is "twenty billion, one hundred two million, eighty-five thousand, six hundred thirty-seven".