86017282921 has 2 divisors, whose sum is σ = 86017282922. Its totient is φ = 86017282920.

The previous prime is 86017282903. The next prime is 86017282927. The reversal of 86017282921 is 12928271068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58040037225 + 27977245696 = 240915^2 + 167264^2 .

It is a cyclic number.

It is not a de Polignac number, because 86017282921 - 2⁹ = 86017282409 is a prime.

It is a super-2 number, since 2×86017282921² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86017282927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43008641460 + 43008641461.

It is an arithmetic number, because the mean of its divisors is an integer number (43008641461).

Almost surely, 2^86017282921 is an apocalyptic number.

It is an amenable number.

86017282921 is a deficient number, since it is larger than the sum of its proper divisors (1).

86017282921 is an equidigital number, since it uses as much as digits as its factorization.

86017282921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 86017282921 in words is "eighty-six billion, seventeen million, two hundred eighty-two thousand, nine hundred twenty-one".