138625689403 has 2 divisors, whose sum is σ = 138625689404. Its totient is φ = 138625689402.

The previous prime is 138625689383. The next prime is 138625689413. The reversal of 138625689403 is 304986526831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138625689403 is a prime.

It is not a weakly prime, because it can be changed into another prime (138625689413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69312844701 + 69312844702.

It is an arithmetic number, because the mean of its divisors is an integer number (69312844702).

Almost surely, 2^138625689403 is an apocalyptic number.

138625689403 is a deficient number, since it is larger than the sum of its proper divisors (1).

138625689403 is an equidigital number, since it uses as much as digits as its factorization.

138625689403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 138625689403 in words is "one hundred thirty-eight billion, six hundred twenty-five million, six hundred eighty-nine thousand, four hundred three".