20061620101 has 2 divisors, whose sum is σ = 20061620102. Its totient is φ = 20061620100.

The previous prime is 20061620099. The next prime is 20061620141. The reversal of 20061620101 is 10102616002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20059056900 + 2563201 = 141630^2 + 1601^2 .

It is a cyclic number.

It is not a de Polignac number, because 20061620101 - 2¹ = 20061620099 is a prime.

Together with 20061620099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20061620141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030810050 + 10030810051.

It is an arithmetic number, because the mean of its divisors is an integer number (10030810051).

Almost surely, 2^20061620101 is an apocalyptic number.

It is an amenable number.

20061620101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20061620101 is an equidigital number, since it uses as much as digits as its factorization.

20061620101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20061620101 in words is "twenty billion, sixty-one million, six hundred twenty thousand, one hundred one".