7138262185805 has 8 divisors (see below), whose sum is σ = 8727535653912. Its totient is φ = 5602862394688.

The previous prime is 7138262185771. The next prime is 7138262185807. The reversal of 7138262185805 is 5085812628317.

It can be written as a sum of positive squares in 4 ways, for example, as 166534183396 + 6971728002409 = 408086^2 + 2640403^2 .

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 7138262185805 - 2²⁴ = 7138245408589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138262185807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13468418954 + ... + 13468419483.

It is an arithmetic number, because the mean of its divisors is an integer number (1090941956739).

Almost surely, 2^{7138262185805} is an apocalyptic number.

It is an amenable number.

7138262185805 is a deficient number, since it is larger than the sum of its proper divisors (1589273468107).

7138262185805 is a wasteful number, since it uses less digits than its factorization.

7138262185805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26936838495.

The product of its (nonzero) digits is 6451200, while the sum is 56.

The spelling of 7138262185805 in words is "seven trillion, one hundred thirty-eight billion, two hundred sixty-two million, one hundred eighty-five thousand, eight hundred five".