86222420497 has 2 divisors, whose sum is σ = 86222420498. Its totient is φ = 86222420496.

The previous prime is 86222420441. The next prime is 86222420503. The reversal of 86222420497 is 79402422268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85577311296 + 645109201 = 292536^2 + 25399^2 .

It is a cyclic number.

It is not a de Polignac number, because 86222420497 - 2¹¹ = 86222418449 is a prime.

It is a super-2 number, since 2×86222420497² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86222420797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43111210248 + 43111210249.

It is an arithmetic number, because the mean of its divisors is an integer number (43111210249).

Almost surely, 2^86222420497 is an apocalyptic number.

It is an amenable number.

86222420497 is a deficient number, since it is larger than the sum of its proper divisors (1).

86222420497 is an equidigital number, since it uses as much as digits as its factorization.

86222420497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 86222420497 in words is "eighty-six billion, two hundred twenty-two million, four hundred twenty thousand, four hundred ninety-seven".