864367946641 has 2 divisors, whose sum is σ = 864367946642. Its totient is φ = 864367946640.

The previous prime is 864367946573. The next prime is 864367946653. The reversal of 864367946641 is 146649763468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 796861514241 + 67506432400 = 892671^2 + 259820^2 .

It is a cyclic number.

It is not a de Polignac number, because 864367946641 - 2⁹ = 864367946129 is a prime.

It is not a weakly prime, because it can be changed into another prime (864367946671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432183973320 + 432183973321.

It is an arithmetic number, because the mean of its divisors is an integer number (432183973321).

Almost surely, 2^864367946641 is an apocalyptic number.

It is an amenable number.

864367946641 is a deficient number, since it is larger than the sum of its proper divisors (1).

864367946641 is an equidigital number, since it uses as much as digits as its factorization.

864367946641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125411328, while the sum is 64.

The spelling of 864367946641 in words is "eight hundred sixty-four billion, three hundred sixty-seven million, nine hundred forty-six thousand, six hundred forty-one".