20105531353 has 2 divisors, whose sum is σ = 20105531354. Its totient is φ = 20105531352.

The previous prime is 20105531317. The next prime is 20105531387. The reversal of 20105531353 is 35313550102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11498701824 + 8606829529 = 107232^2 + 92773^2 .

It is a cyclic number.

It is not a de Polignac number, because 20105531353 - 2¹⁷ = 20105400281 is a prime.

It is not a weakly prime, because it can be changed into another prime (20105531393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052765676 + 10052765677.

It is an arithmetic number, because the mean of its divisors is an integer number (10052765677).

Almost surely, 2^20105531353 is an apocalyptic number.

It is an amenable number.

20105531353 is a deficient number, since it is larger than the sum of its proper divisors (1).

20105531353 is an equidigital number, since it uses as much as digits as its factorization.

20105531353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 28.

The spelling of 20105531353 in words is "twenty billion, one hundred five million, five hundred thirty-one thousand, three hundred fifty-three".