138945134374853 has 2 divisors, whose sum is σ = 138945134374854. Its totient is φ = 138945134374852.

The previous prime is 138945134374799. The next prime is 138945134374889. The reversal of 138945134374853 is 358473431549831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135460315342564 + 3484819032289 = 11638742^2 + 1866767^2 .

It is a cyclic number.

It is not a de Polignac number, because 138945134374853 - 2⁴⁴ = 121352948330437 is a prime.

It is a super-2 number, since 2×138945134374853² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138945134374153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69472567187426 + 69472567187427.

It is an arithmetic number, because the mean of its divisors is an integer number (69472567187427).

Almost surely, 2^{138945134374853} is an apocalyptic number.

It is an amenable number.

138945134374853 is a deficient number, since it is larger than the sum of its proper divisors (1).

138945134374853 is an equidigital number, since it uses as much as digits as its factorization.

138945134374853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 522547200, while the sum is 68.

The spelling of 138945134374853 in words is "one hundred thirty-eight trillion, nine hundred forty-five billion, one hundred thirty-four million, three hundred seventy-four thousand, eight hundred fifty-three".