138305771526235 has 4 divisors (see below), whose sum is σ = 165966925831488. Its totient is φ = 110644617220984.

The previous prime is 138305771526191. The next prime is 138305771526239. The reversal of 138305771526235 is 532625177503831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138305771526235 - 2²⁹ = 138305234655323 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138305771526235.

It is not an unprimeable number, because it can be changed into a prime (138305771526239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13830577152619 + ... + 13830577152628.

It is an arithmetic number, because the mean of its divisors is an integer number (41491731457872).

Almost surely, 2^{138305771526235} is an apocalyptic number.

138305771526235 is a deficient number, since it is larger than the sum of its proper divisors (27661154305253).

138305771526235 is an equidigital number, since it uses as much as digits as its factorization.

138305771526235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27661154305252.

The product of its (nonzero) digits is 31752000, while the sum is 58.

The spelling of 138305771526235 in words is "one hundred thirty-eight trillion, three hundred five billion, seven hundred seventy-one million, five hundred twenty-six thousand, two hundred thirty-five".