82145694541 has 2 divisors, whose sum is σ = 82145694542. Its totient is φ = 82145694540.

The previous prime is 82145694539. The next prime is 82145694569. The reversal of 82145694541 is 14549654128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48508300516 + 33637394025 = 220246^2 + 183405^2 .

It is a cyclic number.

It is not a de Polignac number, because 82145694541 - 2¹ = 82145694539 is a prime.

Together with 82145694539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82145694941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41072847270 + 41072847271.

It is an arithmetic number, because the mean of its divisors is an integer number (41072847271).

Almost surely, 2^82145694541 is an apocalyptic number.

It is an amenable number.

82145694541 is a deficient number, since it is larger than the sum of its proper divisors (1).

82145694541 is an equidigital number, since it uses as much as digits as its factorization.

82145694541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382400, while the sum is 49.

The spelling of 82145694541 in words is "eighty-two billion, one hundred forty-five million, six hundred ninety-four thousand, five hundred forty-one".