20202109073 has 2 divisors, whose sum is σ = 20202109074. Its totient is φ = 20202109072.

The previous prime is 20202109061. The next prime is 20202109091. The reversal of 20202109073 is 37090120202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13587865489 + 6614243584 = 116567^2 + 81328^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202109073 - 2¹⁴ = 20202092689 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202109673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101054536 + 10101054537.

It is an arithmetic number, because the mean of its divisors is an integer number (10101054537).

Almost surely, 2^20202109073 is an apocalyptic number.

It is an amenable number.

20202109073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202109073 is an equidigital number, since it uses as much as digits as its factorization.

20202109073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 20202109073 its reverse (37090120202), we get a palindrome (57292229275).

The spelling of 20202109073 in words is "twenty billion, two hundred two million, one hundred nine thousand, seventy-three".