82491839147 has 4 divisors (see below), whose sum is σ = 82498181640. Its totient is φ = 82485496656.

The previous prime is 82491839141. The next prime is 82491839167. The reversal of 82491839147 is 74193819428.

It is a happy number.

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 82491839147 - 2⁶ = 82491839083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82491839092 and 82491839101.

It is not an unprimeable number, because it can be changed into a prime (82491839141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3151697 + ... + 3177762.

It is an arithmetic number, because the mean of its divisors is an integer number (20624545410).

Almost surely, 2^82491839147 is an apocalyptic number.

82491839147 is a deficient number, since it is larger than the sum of its proper divisors (6342493).

82491839147 is a wasteful number, since it uses less digits than its factorization.

82491839147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342492.

The product of its digits is 3483648, while the sum is 56.

The spelling of 82491839147 in words is "eighty-two billion, four hundred ninety-one million, eight hundred thirty-nine thousand, one hundred forty-seven".