20610445771129 has 2 divisors, whose sum is σ = 20610445771130. Its totient is φ = 20610445771128.

The previous prime is 20610445771127. The next prime is 20610445771169. The reversal of 20610445771129 is 92117754401602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20457348080400 + 153097690729 = 4522980^2 + 391277^2 .

It is a cyclic number.

It is not a de Polignac number, because 20610445771129 - 2¹ = 20610445771127 is a prime.

Together with 20610445771127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20610445771127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10305222885564 + 10305222885565.

It is an arithmetic number, because the mean of its divisors is an integer number (10305222885565).

Almost surely, 2^{20610445771129} is an apocalyptic number.

It is an amenable number.

20610445771129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20610445771129 is an equidigital number, since it uses as much as digits as its factorization.

20610445771129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 20610445771129 in words is "twenty trillion, six hundred ten billion, four hundred forty-five million, seven hundred seventy-one thousand, one hundred twenty-nine".