139422646291 has 2 divisors, whose sum is σ = 139422646292. Its totient is φ = 139422646290.

The previous prime is 139422646271. The next prime is 139422646339. The reversal of 139422646291 is 192646224931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139422646291 - 2¹⁹ = 139422122003 is a prime.

It is a super-3 number, since 3×139422646291³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (139422646271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69711323145 + 69711323146.

It is an arithmetic number, because the mean of its divisors is an integer number (69711323146).

Almost surely, 2^139422646291 is an apocalyptic number.

139422646291 is a deficient number, since it is larger than the sum of its proper divisors (1).

139422646291 is an equidigital number, since it uses as much as digits as its factorization.

139422646291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The spelling of 139422646291 in words is "one hundred thirty-nine billion, four hundred twenty-two million, six hundred forty-six thousand, two hundred ninety-one".