138570075643 has 2 divisors, whose sum is σ = 138570075644. Its totient is φ = 138570075642.

The previous prime is 138570075617. The next prime is 138570075653. The reversal of 138570075643 is 346570075831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138570075643 is a prime.

It is not a weakly prime, because it can be changed into another prime (138570075613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69285037821 + 69285037822.

It is an arithmetic number, because the mean of its divisors is an integer number (69285037822).

Almost surely, 2^138570075643 is an apocalyptic number.

138570075643 is a deficient number, since it is larger than the sum of its proper divisors (1).

138570075643 is an equidigital number, since it uses as much as digits as its factorization.

138570075643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 138570075643 in words is "one hundred thirty-eight billion, five hundred seventy million, seventy-five thousand, six hundred forty-three".