138099117451 has 2 divisors, whose sum is σ = 138099117452. Its totient is φ = 138099117450.

The previous prime is 138099117389. The next prime is 138099117479. The reversal of 138099117451 is 154711990831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138099117451 - 2²⁹ = 137562246539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138099117395 and 138099117404.

It is not a weakly prime, because it can be changed into another prime (138099157451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69049558725 + 69049558726.

It is an arithmetic number, because the mean of its divisors is an integer number (69049558726).

Almost surely, 2^138099117451 is an apocalyptic number.

138099117451 is a deficient number, since it is larger than the sum of its proper divisors (1).

138099117451 is an equidigital number, since it uses as much as digits as its factorization.

138099117451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 49.

The spelling of 138099117451 in words is "one hundred thirty-eight billion, ninety-nine million, one hundred seventeen thousand, four hundred fifty-one".