138801078405023 has 2 divisors, whose sum is σ = 138801078405024. Its totient is φ = 138801078405022.

The previous prime is 138801078404977. The next prime is 138801078405049. The reversal of 138801078405023 is 320504870108831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138801078405023 - 2¹⁶ = 138801078339487 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138801078405923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69400539202511 + 69400539202512.

It is an arithmetic number, because the mean of its divisors is an integer number (69400539202512).

Almost surely, 2^{138801078405023} is an apocalyptic number.

138801078405023 is a deficient number, since it is larger than the sum of its proper divisors (1).

138801078405023 is an equidigital number, since it uses as much as digits as its factorization.

138801078405023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 138801078405023 in words is "one hundred thirty-eight trillion, eight hundred one billion, seventy-eight million, four hundred five thousand, twenty-three".