20010123373 has 2 divisors, whose sum is σ = 20010123374. Its totient is φ = 20010123372.

The previous prime is 20010123311. The next prime is 20010123403. The reversal of 20010123373 is 37332101002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15738455209 + 4271668164 = 125453^2 + 65358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010123373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010123473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005061686 + 10005061687.

It is an arithmetic number, because the mean of its divisors is an integer number (10005061687).

Almost surely, 2^20010123373 is an apocalyptic number.

It is an amenable number.

20010123373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010123373 is an equidigital number, since it uses as much as digits as its factorization.

20010123373 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 22.

Adding to 20010123373 its reverse (37332101002), we get a palindrome (57342224375).

The spelling of 20010123373 in words is "twenty billion, ten million, one hundred twenty-three thousand, three hundred seventy-three".