804872544641629 has 2 divisors, whose sum is σ = 804872544641630. Its totient is φ = 804872544641628.

The previous prime is 804872544641603. The next prime is 804872544641639. The reversal of 804872544641629 is 926146445278408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 790817468661529 + 14055075980100 = 28121477^2 + 3749010^2 .

It is a cyclic number.

It is not a de Polignac number, because 804872544641629 - 2¹⁵ = 804872544608861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804872544641639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402436272320814 + 402436272320815.

It is an arithmetic number, because the mean of its divisors is an integer number (402436272320815).

Almost surely, 2^{804872544641629} is an apocalyptic number.

It is an amenable number.

804872544641629 is a deficient number, since it is larger than the sum of its proper divisors (1).

804872544641629 is an equidigital number, since it uses as much as digits as its factorization.

804872544641629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 743178240, while the sum is 70.

The spelling of 804872544641629 in words is "eight hundred four trillion, eight hundred seventy-two billion, five hundred forty-four million, six hundred forty-one thousand, six hundred twenty-nine".