82317213238511 has 4 divisors (see below), whose sum is σ = 83072417029800. Its totient is φ = 81562009447224.

The previous prime is 82317213238427. The next prime is 82317213238517. The reversal of 82317213238511 is 11583231271328.

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 82317213238511 - 2¹⁰ = 82317213237487 is a prime.

It is a super-2 number, since 2×82317213238511² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82317213238517) 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, 377601895481 + ... + 377601895698.

It is an arithmetic number, because the mean of its divisors is an integer number (20768104257450).

Almost surely, 2^{82317213238511} is an apocalyptic number.

82317213238511 is a deficient number, since it is larger than the sum of its proper divisors (755203791289).

82317213238511 is a wasteful number, since it uses less digits than its factorization.

82317213238511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755203791288.

The product of its digits is 483840, while the sum is 47.

The spelling of 82317213238511 in words is "eighty-two trillion, three hundred seventeen billion, two hundred thirteen million, two hundred thirty-eight thousand, five hundred eleven".