20106564433 has 2 divisors, whose sum is σ = 20106564434. Its totient is φ = 20106564432.

The previous prime is 20106564409. The next prime is 20106564437. The reversal of 20106564433 is 33446560102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19281266449 + 825297984 = 138857^2 + 28728^2 .

It is a cyclic number.

It is not a de Polignac number, because 20106564433 - 2³³ = 11516629841 is a prime.

It is a super-2 number, since 2×20106564433² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20106564437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053282216 + 10053282217.

It is an arithmetic number, because the mean of its divisors is an integer number (10053282217).

Almost surely, 2^20106564433 is an apocalyptic number.

It is an amenable number.

20106564433 is a deficient number, since it is larger than the sum of its proper divisors (1).

20106564433 is an equidigital number, since it uses as much as digits as its factorization.

20106564433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 20106564433 in words is "twenty billion, one hundred six million, five hundred sixty-four thousand, four hundred thirty-three".