1000015381643 has 2 divisors, whose sum is σ = 1000015381644. Its totient is φ = 1000015381642.

The previous prime is 1000015381507. The next prime is 1000015381711. The reversal of 1000015381643 is 3461835100001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000015381643 - 2¹⁰ = 1000015380619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000015381843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500007690821 + 500007690822.

It is an arithmetic number, because the mean of its divisors is an integer number (500007690822).

Almost surely, 2^{1000015381643} is an apocalyptic number.

1000015381643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000015381643 is an equidigital number, since it uses as much as digits as its factorization.

1000015381643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 1000015381643 in words is "one trillion, fifteen million, three hundred eighty-one thousand, six hundred forty-three".