138045404551 has 2 divisors, whose sum is σ = 138045404552. Its totient is φ = 138045404550.

The previous prime is 138045404513. The next prime is 138045404561. The reversal of 138045404551 is 155404540831.

It is a strong prime.

It is an emirp because it is prime and its reverse (155404540831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138045404551 - 2⁷ = 138045404423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138045404501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69022702275 + 69022702276.

It is an arithmetic number, because the mean of its divisors is an integer number (69022702276).

Almost surely, 2^138045404551 is an apocalyptic number.

138045404551 is a deficient number, since it is larger than the sum of its proper divisors (1).

138045404551 is an equidigital number, since it uses as much as digits as its factorization.

138045404551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 138045404551 in words is "one hundred thirty-eight billion, forty-five million, four hundred four thousand, five hundred fifty-one".