86056124521 has 2 divisors, whose sum is σ = 86056124522. Its totient is φ = 86056124520.

The previous prime is 86056124519. The next prime is 86056124543. The reversal of 86056124521 is 12542165068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61003566121 + 25052558400 = 246989^2 + 158280^2 .

It is a cyclic number.

It is not a de Polignac number, because 86056124521 - 2¹ = 86056124519 is a prime.

Together with 86056124519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (86056124591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43028062260 + 43028062261.

It is an arithmetic number, because the mean of its divisors is an integer number (43028062261).

Almost surely, 2^86056124521 is an apocalyptic number.

It is an amenable number.

86056124521 is a deficient number, since it is larger than the sum of its proper divisors (1).

86056124521 is an equidigital number, since it uses as much as digits as its factorization.

86056124521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

Adding to 86056124521 its reverse (12542165068), we get a palindrome (98598289589).

The spelling of 86056124521 in words is "eighty-six billion, fifty-six million, one hundred twenty-four thousand, five hundred twenty-one".