138775002643 has 2 divisors, whose sum is σ = 138775002644. Its totient is φ = 138775002642.

The previous prime is 138775002617. The next prime is 138775002661. The reversal of 138775002643 is 346200577831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138775002643 - 2¹³ = 138774994451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138775002593 and 138775002602.

It is not a weakly prime, because it can be changed into another prime (138775002673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69387501321 + 69387501322.

It is an arithmetic number, because the mean of its divisors is an integer number (69387501322).

Almost surely, 2^138775002643 is an apocalyptic number.

138775002643 is a deficient number, since it is larger than the sum of its proper divisors (1).

138775002643 is an equidigital number, since it uses as much as digits as its factorization.

138775002643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 138775002643 in words is "one hundred thirty-eight billion, seven hundred seventy-five million, two thousand, six hundred forty-three".