138793728863 has 2 divisors, whose sum is σ = 138793728864. Its totient is φ = 138793728862.

The previous prime is 138793728841. The next prime is 138793728917. The reversal of 138793728863 is 368827397831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138793728863 - 2¹⁴ = 138793712479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138793728863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138793728833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69396864431 + 69396864432.

It is an arithmetic number, because the mean of its divisors is an integer number (69396864432).

Almost surely, 2^138793728863 is an apocalyptic number.

138793728863 is a deficient number, since it is larger than the sum of its proper divisors (1).

138793728863 is an equidigital number, since it uses as much as digits as its factorization.

138793728863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 65.

The spelling of 138793728863 in words is "one hundred thirty-eight billion, seven hundred ninety-three million, seven hundred twenty-eight thousand, eight hundred sixty-three".