82097238779 has 4 divisors (see below), whose sum is σ = 82103387520. Its totient is φ = 82091090040.

The previous prime is 82097238761. The next prime is 82097238791. The reversal of 82097238779 is 97783279028.

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 82097238779 - 2¹⁶ = 82097173243 is a prime.

It is a super-2 number, since 2×82097238779² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82097238739) 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, 3054299 + ... + 3081060.

It is an arithmetic number, because the mean of its divisors is an integer number (20525846880).

Almost surely, 2^82097238779 is an apocalyptic number.

82097238779 is a deficient number, since it is larger than the sum of its proper divisors (6148741).

82097238779 is a wasteful number, since it uses less digits than its factorization.

82097238779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148740.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 82097238779 in words is "eighty-two billion, ninety-seven million, two hundred thirty-eight thousand, seven hundred seventy-nine".