86228521517 has 2 divisors, whose sum is σ = 86228521518. Its totient is φ = 86228521516.

The previous prime is 86228521501. The next prime is 86228521583. The reversal of 86228521517 is 71512582268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76931897956 + 9296623561 = 277366^2 + 96419^2 .

It is a cyclic number.

It is not a de Polignac number, because 86228521517 - 2⁴ = 86228521501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86228521117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43114260758 + 43114260759.

It is an arithmetic number, because the mean of its divisors is an integer number (43114260759).

Almost surely, 2^86228521517 is an apocalyptic number.

It is an amenable number.

86228521517 is a deficient number, since it is larger than the sum of its proper divisors (1).

86228521517 is an equidigital number, since it uses as much as digits as its factorization.

86228521517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537600, while the sum is 47.

The spelling of 86228521517 in words is "eighty-six billion, two hundred twenty-eight million, five hundred twenty-one thousand, five hundred seventeen".