8534021778539 has 2 divisors, whose sum is σ = 8534021778540. Its totient is φ = 8534021778538.

The previous prime is 8534021778407. The next prime is 8534021778577. The reversal of 8534021778539 is 9358771204358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8534021778539 - 2⁸ = 8534021778283 is a prime.

It is a super-4 number, since 4×8534021778539⁴ (a number of 53 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (8534021778599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4267010889269 + 4267010889270.

It is an arithmetic number, because the mean of its divisors is an integer number (4267010889270).

Almost surely, 2^{8534021778539} is an apocalyptic number.

8534021778539 is a deficient number, since it is larger than the sum of its proper divisors (1).

8534021778539 is an equidigital number, since it uses as much as digits as its factorization.

8534021778539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 8534021778539 in words is "eight trillion, five hundred thirty-four billion, twenty-one million, seven hundred seventy-eight thousand, five hundred thirty-nine".