138454137863 has 2 divisors, whose sum is σ = 138454137864. Its totient is φ = 138454137862.

The previous prime is 138454137859. The next prime is 138454137881. The reversal of 138454137863 is 368731454831.

It is a weak prime.

It is an emirp because it is prime and its reverse (368731454831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138454137863 - 2² = 138454137859 is a prime.

It is a super-2 number, since 2×138454137863² (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 (138454137763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69227068931 + 69227068932.

It is an arithmetic number, because the mean of its divisors is an integer number (69227068932).

Almost surely, 2^138454137863 is an apocalyptic number.

138454137863 is a deficient number, since it is larger than the sum of its proper divisors (1).

138454137863 is an equidigital number, since it uses as much as digits as its factorization.

138454137863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 53.

The spelling of 138454137863 in words is "one hundred thirty-eight billion, four hundred fifty-four million, one hundred thirty-seven thousand, eight hundred sixty-three".