864149770727 has 2 divisors, whose sum is σ = 864149770728. Its totient is φ = 864149770726.

The previous prime is 864149770721. The next prime is 864149770741. The reversal of 864149770727 is 727077941468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864149770727 - 2¹⁴ = 864149754343 is a prime.

It is a super-2 number, since 2×864149770727² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 864149770727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864149770721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432074885363 + 432074885364.

It is an arithmetic number, because the mean of its divisors is an integer number (432074885364).

Almost surely, 2^864149770727 is an apocalyptic number.

864149770727 is a deficient number, since it is larger than the sum of its proper divisors (1).

864149770727 is an equidigital number, since it uses as much as digits as its factorization.

864149770727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33191424, while the sum is 62.

The spelling of 864149770727 in words is "eight hundred sixty-four billion, one hundred forty-nine million, seven hundred seventy thousand, seven hundred twenty-seven".