138762537805 has 8 divisors (see below), whose sum is σ = 166540433400. Its totient is φ = 110993104896.

The previous prime is 138762537803. The next prime is 138762537833. The reversal of 138762537805 is 508735267831.

It can be written as a sum of positive squares in 4 ways, for example, as 9045151236 + 129717386569 = 95106^2 + 360163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138762537805 - 2¹ = 138762537803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138762537803) 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 in 7 ways as a sum of consecutive naturals, for example, 2079540 + ... + 2145229.

It is an arithmetic number, because the mean of its divisors is an integer number (20817554175).

Almost surely, 2^138762537805 is an apocalyptic number.

It is an amenable number.

138762537805 is a deficient number, since it is larger than the sum of its proper divisors (27777895595).

138762537805 is an equidigital number, since it uses as much as digits as its factorization.

138762537805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231343.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 138762537805 in words is "one hundred thirty-eight billion, seven hundred sixty-two million, five hundred thirty-seven thousand, eight hundred five".