20101010873 has 2 divisors, whose sum is σ = 20101010874. Its totient is φ = 20101010872.

The previous prime is 20101010869. The next prime is 20101010927. The reversal of 20101010873 is 37801010102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16181875264 + 3919135609 = 127208^2 + 62603^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101010873 - 2² = 20101010869 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101010833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050505436 + 10050505437.

It is an arithmetic number, because the mean of its divisors is an integer number (10050505437).

Almost surely, 2^20101010873 is an apocalyptic number.

It is an amenable number.

20101010873 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101010873 is an equidigital number, since it uses as much as digits as its factorization.

20101010873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 20101010873 its reverse (37801010102), we get a palindrome (57902020975).

The spelling of 20101010873 in words is "twenty billion, one hundred one million, ten thousand, eight hundred seventy-three".