8137853222069 has 4 divisors (see below), whose sum is σ = 8616550470444. Its totient is φ = 7659155973696.

The previous prime is 8137853222053. The next prime is 8137853222071. The reversal of 8137853222069 is 9602223587318.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7095228433969 + 1042624788100 = 2663687^2 + 1021090^2 .

It is not a de Polignac number, because 8137853222069 - 2⁴ = 8137853222053 is a prime.

It is a super-2 number, since 2×8137853222069² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8137853222269) 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, 239348624162 + ... + 239348624195.

It is an arithmetic number, because the mean of its divisors is an integer number (2154137617611).

Almost surely, 2^{8137853222069} is an apocalyptic number.

It is an amenable number.

8137853222069 is a deficient number, since it is larger than the sum of its proper divisors (478697248375).

8137853222069 is a wasteful number, since it uses less digits than its factorization.

8137853222069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478697248374.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 8137853222069 in words is "eight trillion, one hundred thirty-seven billion, eight hundred fifty-three million, two hundred twenty-two thousand, sixty-nine".