138245121463 has 2 divisors, whose sum is σ = 138245121464. Its totient is φ = 138245121462.

The previous prime is 138245121433. The next prime is 138245121481. The reversal of 138245121463 is 364121542831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138245121463 - 2²⁵ = 138211567031 is a prime.

It is a super-2 number, since 2×138245121463² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138245121403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69122560731 + 69122560732.

It is an arithmetic number, because the mean of its divisors is an integer number (69122560732).

Almost surely, 2^138245121463 is an apocalyptic number.

138245121463 is a deficient number, since it is larger than the sum of its proper divisors (1).

138245121463 is an equidigital number, since it uses as much as digits as its factorization.

138245121463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 40.

The spelling of 138245121463 in words is "one hundred thirty-eight billion, two hundred forty-five million, one hundred twenty-one thousand, four hundred sixty-three".