84012544541 has 2 divisors, whose sum is σ = 84012544542. Its totient is φ = 84012544540.

The previous prime is 84012544537. The next prime is 84012544559. The reversal of 84012544541 is 14544521048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69364283641 + 14648260900 = 263371^2 + 121030^2 .

It is a cyclic number.

It is not a de Polignac number, because 84012544541 - 2² = 84012544537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84012544495 and 84012544504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84012544531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42006272270 + 42006272271.

It is an arithmetic number, because the mean of its divisors is an integer number (42006272271).

Almost surely, 2^84012544541 is an apocalyptic number.

It is an amenable number.

84012544541 is a deficient number, since it is larger than the sum of its proper divisors (1).

84012544541 is an equidigital number, since it uses as much as digits as its factorization.

84012544541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102400, while the sum is 38.

The spelling of 84012544541 in words is "eighty-four billion, twelve million, five hundred forty-four thousand, five hundred forty-one".