862401628729 has 2 divisors, whose sum is σ = 862401628730. Its totient is φ = 862401628728.

The previous prime is 862401628717. The next prime is 862401628757. The reversal of 862401628729 is 927826104268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708147495225 + 154254133504 = 841515^2 + 392752^2 .

It is a cyclic number.

It is not a de Polignac number, because 862401628729 - 2⁷ = 862401628601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 862401628729.

It is not a weakly prime, because it can be changed into another prime (862401628769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431200814364 + 431200814365.

It is an arithmetic number, because the mean of its divisors is an integer number (431200814365).

Almost surely, 2^862401628729 is an apocalyptic number.

It is an amenable number.

862401628729 is a deficient number, since it is larger than the sum of its proper divisors (1).

862401628729 is an equidigital number, since it uses as much as digits as its factorization.

862401628729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 862401628729 in words is "eight hundred sixty-two billion, four hundred one million, six hundred twenty-eight thousand, seven hundred twenty-nine".