138741166423 has 2 divisors, whose sum is σ = 138741166424. Its totient is φ = 138741166422.

The previous prime is 138741166393. The next prime is 138741166433. The reversal of 138741166423 is 324661147831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138741166423 is a prime.

It is a super-2 number, since 2×138741166423² (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 (138741166433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69370583211 + 69370583212.

It is an arithmetic number, because the mean of its divisors is an integer number (69370583212).

Almost surely, 2^138741166423 is an apocalyptic number.

138741166423 is a deficient number, since it is larger than the sum of its proper divisors (1).

138741166423 is an equidigital number, since it uses as much as digits as its factorization.

138741166423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 46.

The spelling of 138741166423 in words is "one hundred thirty-eight billion, seven hundred forty-one million, one hundred sixty-six thousand, four hundred twenty-three".