138763750399 has 2 divisors, whose sum is σ = 138763750400. Its totient is φ = 138763750398.

The previous prime is 138763750313. The next prime is 138763750429. The reversal of 138763750399 is 993057367831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138763750399 - 2¹¹ = 138763748351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138763750309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69381875199 + 69381875200.

It is an arithmetic number, because the mean of its divisors is an integer number (69381875200).

Almost surely, 2^138763750399 is an apocalyptic number.

138763750399 is a deficient number, since it is larger than the sum of its proper divisors (1).

138763750399 is an equidigital number, since it uses as much as digits as its factorization.

138763750399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25719120, while the sum is 61.

The spelling of 138763750399 in words is "one hundred thirty-eight billion, seven hundred sixty-three million, seven hundred fifty thousand, three hundred ninety-nine".