8253691131839 has 4 divisors (see below), whose sum is σ = 8273296099320. Its totient is φ = 8234086164360.

The previous prime is 8253691131797. The next prime is 8253691131859. The reversal of 8253691131839 is 9381311963528.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8253691131839 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 (8253691131859) 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, 9802483109 + ... + 9802483950.

It is an arithmetic number, because the mean of its divisors is an integer number (2068324024830).

Almost surely, 2^{8253691131839} is an apocalyptic number.

8253691131839 is a deficient number, since it is larger than the sum of its proper divisors (19604967481).

8253691131839 is a wasteful number, since it uses less digits than its factorization.

8253691131839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19604967480.

The product of its digits is 8398080, while the sum is 59.

The spelling of 8253691131839 in words is "eight trillion, two hundred fifty-three billion, six hundred ninety-one million, one hundred thirty-one thousand, eight hundred thirty-nine".