712168897801 has 3 divisors (see below), whose sum is σ = 712169741703. Its totient is φ = 712168053900.

The previous prime is 712168897799. The next prime is 712168897837. The reversal of 712168897801 is 108798861217.

The square root of 712168897801 is 843901.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 108798861217 = 71 ⋅1532378327.

It can be written as a sum of positive squares in only one way, i.e., 116894926201 + 595273971600 = 341899^2 + 771540^2 .

It is not a de Polignac number, because 712168897801 - 2¹ = 712168897799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712168897201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 421951 + ... + 1265851.

It is an arithmetic number, because the mean of its divisors is an integer number (237389913901).

Almost surely, 2^712168897801 is an apocalyptic number.

712168897801 is the 843901-st square number.

712168897801 is the 421951-st centered octagonal number.

It is an amenable number.

712168897801 is a deficient number, since it is larger than the sum of its proper divisors (843902).

712168897801 is an frugal number, since it uses more digits than its factorization.

712168897801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687802 (or 843901 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 58.

The spelling of 712168897801 in words is "seven hundred twelve billion, one hundred sixty-eight million, eight hundred ninety-seven thousand, eight hundred one".