82946512139 has 4 divisors (see below), whose sum is σ = 86552882256. Its totient is φ = 79340142024.

The previous prime is 82946512127. The next prime is 82946512147. The reversal of 82946512139 is 93121564928.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82946512139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82946512169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803185024 + ... + 1803185069.

It is an arithmetic number, because the mean of its divisors is an integer number (21638220564).

Almost surely, 2^82946512139 is an apocalyptic number.

82946512139 is a deficient number, since it is larger than the sum of its proper divisors (3606370117).

82946512139 is a wasteful number, since it uses less digits than its factorization.

82946512139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606370116.

The product of its digits is 933120, while the sum is 50.

The spelling of 82946512139 in words is "eighty-two billion, nine hundred forty-six million, five hundred twelve thousand, one hundred thirty-nine".