138459478763 has 2 divisors, whose sum is σ = 138459478764. Its totient is φ = 138459478762.

The previous prime is 138459478741. The next prime is 138459478799. The reversal of 138459478763 is 367874954831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138459478763 - 2⁶ = 138459478699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138459478763.

It is not a weakly prime, because it can be changed into another prime (138459478363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69229739381 + 69229739382.

It is an arithmetic number, because the mean of its divisors is an integer number (69229739382).

Almost surely, 2^138459478763 is an apocalyptic number.

138459478763 is a deficient number, since it is larger than the sum of its proper divisors (1).

138459478763 is an equidigital number, since it uses as much as digits as its factorization.

138459478763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121927680, while the sum is 65.

The spelling of 138459478763 in words is "one hundred thirty-eight billion, four hundred fifty-nine million, four hundred seventy-eight thousand, seven hundred sixty-three".