20011013149 has 2 divisors, whose sum is σ = 20011013150. Its totient is φ = 20011013148.

The previous prime is 20011013129. The next prime is 20011013201. The reversal of 20011013149 is 94131011002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19288209924 + 722803225 = 138882^2 + 26885^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011013149 - 2⁵ = 20011013117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011013119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005506574 + 10005506575.

It is an arithmetic number, because the mean of its divisors is an integer number (10005506575).

Almost surely, 2^20011013149 is an apocalyptic number.

It is an amenable number.

20011013149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011013149 is an equidigital number, since it uses as much as digits as its factorization.

20011013149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 20011013149 in words is "twenty billion, eleven million, thirteen thousand, one hundred forty-nine".