82505145140811 has 12 divisors (see below), whose sum is σ = 119174189385888. Its totient is φ = 55003388163504.

The previous prime is 82505145140773. The next prime is 82505145140897. The reversal of 82505145140811 is 11804154150528.

82505145140811 is a `hidden beast` number, since 8 + 2 + 5 + 0 + 51 + 4 + 514 + 0 + 81 + 1 = 666.

It is not a de Polignac number, because 82505145140811 - 2²⁹ = 82504608269899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82505145145811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13130926 + ... + 18369308.

It is an arithmetic number, because the mean of its divisors is an integer number (9931182448824).

Almost surely, 2^{82505145140811} is an apocalyptic number.

82505145140811 is a deficient number, since it is larger than the sum of its proper divisors (36669044245077).

82505145140811 is a wasteful number, since it uses less digits than its factorization.

82505145140811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6988402 (or 6988399 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 45.

The spelling of 82505145140811 in words is "eighty-two trillion, five hundred five billion, one hundred forty-five million, one hundred forty thousand, eight hundred eleven".