138745778053 has 2 divisors, whose sum is σ = 138745778054. Its totient is φ = 138745778052.

The previous prime is 138745778027. The next prime is 138745778089. The reversal of 138745778053 is 350877547831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96965600449 + 41780177604 = 311393^2 + 204402^2 .

It is a cyclic number.

It is not a de Polignac number, because 138745778053 - 2³⁷ = 1306824581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138745778023) 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, 69372889026 + 69372889027.

It is an arithmetic number, because the mean of its divisors is an integer number (69372889027).

Almost surely, 2^138745778053 is an apocalyptic number.

It is an amenable number.

138745778053 is a deficient number, since it is larger than the sum of its proper divisors (1).

138745778053 is an equidigital number, since it uses as much as digits as its factorization.

138745778053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19756800, while the sum is 58.

The spelling of 138745778053 in words is "one hundred thirty-eight billion, seven hundred forty-five million, seven hundred seventy-eight thousand, fifty-three".