138153306437 has 2 divisors, whose sum is σ = 138153306438. Its totient is φ = 138153306436.

The previous prime is 138153306433. The next prime is 138153306457. The reversal of 138153306437 is 734603351831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112734106081 + 25419200356 = 335759^2 + 159434^2 .

It is a cyclic number.

It is not a de Polignac number, because 138153306437 - 2² = 138153306433 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138153306433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69076653218 + 69076653219.

It is an arithmetic number, because the mean of its divisors is an integer number (69076653219).

Almost surely, 2^138153306437 is an apocalyptic number.

It is an amenable number.

138153306437 is a deficient number, since it is larger than the sum of its proper divisors (1).

138153306437 is an equidigital number, since it uses as much as digits as its factorization.

138153306437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 138153306437 in words is "one hundred thirty-eight billion, one hundred fifty-three million, three hundred six thousand, four hundred thirty-seven".