6242993390939 has 2 divisors, whose sum is σ = 6242993390940. Its totient is φ = 6242993390938.

The previous prime is 6242993390869. The next prime is 6242993390951. The reversal of 6242993390939 is 9390933992426.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6242993390939 is a prime.

It is not a weakly prime, because it can be changed into another prime (6242993390989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3121496695469 + 3121496695470.

It is an arithmetic number, because the mean of its divisors is an integer number (3121496695470).

Almost surely, 2^{6242993390939} is an apocalyptic number.

6242993390939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6242993390939 is an equidigital number, since it uses as much as digits as its factorization.

6242993390939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153055008, while the sum is 68.

The spelling of 6242993390939 in words is "six trillion, two hundred forty-two billion, nine hundred ninety-three million, three hundred ninety thousand, nine hundred thirty-nine".