82113718961 has 4 divisors (see below), whose sum is σ = 82617484272. Its totient is φ = 81609953652.

The previous prime is 82113718909. The next prime is 82113718987. The reversal of 82113718961 is 16981731128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82113718961 - 2¹⁴ = 82113702577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82113718061) 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, 251882411 + ... + 251882736.

It is an arithmetic number, because the mean of its divisors is an integer number (20654371068).

Almost surely, 2^82113718961 is an apocalyptic number.

It is an amenable number.

82113718961 is a deficient number, since it is larger than the sum of its proper divisors (503765311).

82113718961 is a wasteful number, since it uses less digits than its factorization.

82113718961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503765310.

The product of its digits is 145152, while the sum is 47.

The spelling of 82113718961 in words is "eighty-two billion, one hundred thirteen million, seven hundred eighteen thousand, nine hundred sixty-one".