20106564293 has 2 divisors, whose sum is σ = 20106564294. Its totient is φ = 20106564292.

The previous prime is 20106564253. The next prime is 20106564299. The reversal of 20106564293 is 39246560102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14347727524 + 5758836769 = 119782^2 + 75887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20106564293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20106564299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053282146 + 10053282147.

It is an arithmetic number, because the mean of its divisors is an integer number (10053282147).

Almost surely, 2^20106564293 is an apocalyptic number.

It is an amenable number.

20106564293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20106564293 is an equidigital number, since it uses as much as digits as its factorization.

20106564293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 20106564293 in words is "twenty billion, one hundred six million, five hundred sixty-four thousand, two hundred ninety-three".