862805050129 has 9 divisors (see below), whose sum is σ = 948383724169. Its totient is φ = 784358938660.

The previous prime is 862805050123. The next prime is 862805050141. The reversal of 862805050129 is 921050508268.

The square root of 862805050129 is 928873.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 862805050129 - 2¹¹ = 862805048081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862805050123) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10175382 + ... + 10259824.

Almost surely, 2^862805050129 is an apocalyptic number.

862805050129 is the 928873-rd square number.

862805050129 is the 464437-th centered octagonal number.

It is an amenable number.

862805050129 is a deficient number, since it is larger than the sum of its proper divisors (85578674040).

862805050129 is an frugal number, since it uses more digits than its factorization.

862805050129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168908 (or 84454 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 862805050129 in words is "eight hundred sixty-two billion, eight hundred five million, fifty thousand, one hundred twenty-nine".