20102019073 has 2 divisors, whose sum is σ = 20102019074. Its totient is φ = 20102019072.

The previous prime is 20102019017. The next prime is 20102019079. The reversal of 20102019073 is 37091020102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19956647824 + 145371249 = 141268^2 + 12057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102019073 is a prime.

It is a super-2 number, since 2×20102019073² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20102019079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051009536 + 10051009537.

It is an arithmetic number, because the mean of its divisors is an integer number (10051009537).

Almost surely, 2^20102019073 is an apocalyptic number.

It is an amenable number.

20102019073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102019073 is an equidigital number, since it uses as much as digits as its factorization.

20102019073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 20102019073 its reverse (37091020102), we get a palindrome (57193039175).

The spelling of 20102019073 in words is "twenty billion, one hundred two million, nineteen thousand, seventy-three".