139431516667 has 2 divisors, whose sum is σ = 139431516668. Its totient is φ = 139431516666.

The previous prime is 139431516643. The next prime is 139431516761. The reversal of 139431516667 is 766615134931.

139431516667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139431516667 - 2¹¹ = 139431514619 is a prime.

It is a super-2 number, since 2×139431516667² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139431516617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69715758333 + 69715758334.

It is an arithmetic number, because the mean of its divisors is an integer number (69715758334).

Almost surely, 2^139431516667 is an apocalyptic number.

139431516667 is a deficient number, since it is larger than the sum of its proper divisors (1).

139431516667 is an equidigital number, since it uses as much as digits as its factorization.

139431516667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 52.

The spelling of 139431516667 in words is "one hundred thirty-nine billion, four hundred thirty-one million, five hundred sixteen thousand, six hundred sixty-seven".