82580343881 has 4 divisors (see below), whose sum is σ = 94377535872. Its totient is φ = 70783151892.

The previous prime is 82580343877. The next prime is 82580343893. The reversal of 82580343881 is 18834308528.

It is a happy number.

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 82580343881 - 2² = 82580343877 is a prime.

It is a super-2 number, since 2×82580343881² (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 (82580343821) 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, 5898595985 + ... + 5898595998.

It is an arithmetic number, because the mean of its divisors is an integer number (23594383968).

Almost surely, 2^82580343881 is an apocalyptic number.

It is an amenable number.

82580343881 is a deficient number, since it is larger than the sum of its proper divisors (11797191991).

82580343881 is a wasteful number, since it uses less digits than its factorization.

82580343881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11797191990.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 82580343881 in words is "eighty-two billion, five hundred eighty million, three hundred forty-three thousand, eight hundred eighty-one".