82991321352807 has 16 divisors (see below), whose sum is σ = 129880883868672. Its totient is φ = 46141892952480.

The previous prime is 82991321352799. The next prime is 82991321352811. The reversal of 82991321352807 is 70825312319928.

It is not a de Polignac number, because 82991321352807 - 2³ = 82991321352799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82991321350807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53404967919 + ... + 53404969472.

It is an arithmetic number, because the mean of its divisors is an integer number (8117555241792).

Almost surely, 2^{82991321352807} is an apocalyptic number.

82991321352807 is a deficient number, since it is larger than the sum of its proper divisors (46889562515865).

82991321352807 is a wasteful number, since it uses less digits than its factorization.

82991321352807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106809937438.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 82991321352807 in words is "eighty-two trillion, nine hundred ninety-one billion, three hundred twenty-one million, three hundred fifty-two thousand, eight hundred seven".