7642246431439 has 2 divisors, whose sum is σ = 7642246431440. Its totient is φ = 7642246431438.

The previous prime is 7642246431431. The next prime is 7642246431499. The reversal of 7642246431439 is 9341346422467.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7642246431439 - 2³ = 7642246431431 is a prime.

It is a super-2 number, since 2×7642246431439² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7642246431439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7642246431431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821123215719 + 3821123215720.

It is an arithmetic number, because the mean of its divisors is an integer number (3821123215720).

Almost surely, 2^{7642246431439} is an apocalyptic number.

7642246431439 is a deficient number, since it is larger than the sum of its proper divisors (1).

7642246431439 is an equidigital number, since it uses as much as digits as its factorization.

7642246431439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 55.

The spelling of 7642246431439 in words is "seven trillion, six hundred forty-two billion, two hundred forty-six million, four hundred thirty-one thousand, four hundred thirty-nine".