39245796643 has 2 divisors, whose sum is σ = 39245796644. Its totient is φ = 39245796642.

The previous prime is 39245796631. The next prime is 39245796677. The reversal of 39245796643 is 34669754293.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39245796643 is a prime.

It is not a weakly prime, because it can be changed into another prime (39245796683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19622898321 + 19622898322.

It is an arithmetic number, because the mean of its divisors is an integer number (19622898322).

Almost surely, 2^39245796643 is an apocalyptic number.

39245796643 is a deficient number, since it is larger than the sum of its proper divisors (1).

39245796643 is an equidigital number, since it uses as much as digits as its factorization.

39245796643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 58.

The spelling of 39245796643 in words is "thirty-nine billion, two hundred forty-five million, seven hundred ninety-six thousand, six hundred forty-three".