20113029973 has 2 divisors, whose sum is σ = 20113029974. Its totient is φ = 20113029972.

The previous prime is 20113029941. The next prime is 20113029977. The reversal of 20113029973 is 37992031102.

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., 11008626084 + 9104403889 = 104922^2 + 95417^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113029973 - 2⁵ = 20113029941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113029977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056514986 + 10056514987.

It is an arithmetic number, because the mean of its divisors is an integer number (10056514987).

Almost surely, 2^20113029973 is an apocalyptic number.

It is an amenable number.

20113029973 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113029973 is an equidigital number, since it uses as much as digits as its factorization.

20113029973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 20113029973 in words is "twenty billion, one hundred thirteen million, twenty-nine thousand, nine hundred seventy-three".