2105151521393 has 2 divisors, whose sum is σ = 2105151521394. Its totient is φ = 2105151521392.

The previous prime is 2105151521351. The next prime is 2105151521413. The reversal of 2105151521393 is 3931251515012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1344458802064 + 760692719329 = 1159508^2 + 872177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105151521393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105151521323) 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, 1052575760696 + 1052575760697.

It is an arithmetic number, because the mean of its divisors is an integer number (1052575760697).

Almost surely, 2^{2105151521393} is an apocalyptic number.

It is an amenable number.

2105151521393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105151521393 is an equidigital number, since it uses as much as digits as its factorization.

2105151521393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 38.

The spelling of 2105151521393 in words is "two trillion, one hundred five billion, one hundred fifty-one million, five hundred twenty-one thousand, three hundred ninety-three".