711402841809 has 81 divisors (see below), whose sum is σ = 1151057756667. Its totient is φ = 423073015200.

The previous prime is 711402841781. The next prime is 711402841811. The reversal of 711402841809 is 908148204117.

The square root of 711402841809 is 843447.

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

711402841809 is a `hidden beast` number, since 71 + 140 + 28 + 418 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23133497409 + 688269344400 = 152097^2 + 829620^2 .

It is not a de Polignac number, because 711402841809 - 2²⁷ = 711268624081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (711402841309) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1697858602 + ... + 1697859020.

Almost surely, 2^711402841809 is an apocalyptic number.

711402841809 is the 843447-th square number.

711402841809 is the 421724-th centered octagonal number.

It is an amenable number.

711402841809 is a deficient number, since it is larger than the sum of its proper divisors (439654914858).

711402841809 is an equidigital number, since it uses as much as digits as its factorization.

711402841809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 711402841809 in words is "seven hundred eleven billion, four hundred two million, eight hundred forty-one thousand, eight hundred nine".