82051566805101 has 4 divisors (see below), whose sum is σ = 109402089073472. Its totient is φ = 54701044536732.

The previous prime is 82051566805069. The next prime is 82051566805147. The reversal of 82051566805101 is 10150866515028.

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 not a de Polignac number, because 82051566805101 - 2⁵ = 82051566805069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82051566800101) 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, 13675261134181 + ... + 13675261134186.

It is an arithmetic number, because the mean of its divisors is an integer number (27350522268368).

Almost surely, 2^{82051566805101} is an apocalyptic number.

It is an amenable number.

82051566805101 is a deficient number, since it is larger than the sum of its proper divisors (27350522268371).

82051566805101 is a wasteful number, since it uses less digits than its factorization.

82051566805101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27350522268370.

The product of its (nonzero) digits is 576000, while the sum is 48.

The spelling of 82051566805101 in words is "eighty-two trillion, fifty-one billion, five hundred sixty-six million, eight hundred five thousand, one hundred one".