712351171070021 has 12 divisors (see below), whose sum is σ = 828653930946540. Its totient is φ = 610586329106880.

The previous prime is 712351171069973. The next prime is 712351171070087. The reversal of 712351171070021 is 120070171153217.

It can be written as a sum of positive squares in 2 ways, for example, as 562292615544100 + 150058555525921 = 23712710^2 + 12249839^2 .

It is a de Polignac number, because none of the positive numbers 2^k-712351171070021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712351171070321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94522115 + ... + 101779823.

It is an arithmetic number, because the mean of its divisors is an integer number (69054494245545).

Almost surely, 2^{712351171070021} is an apocalyptic number.

It is an amenable number.

712351171070021 is a deficient number, since it is larger than the sum of its proper divisors (116302759876519).

712351171070021 is a wasteful number, since it uses less digits than its factorization.

712351171070021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9260804 (or 9260797 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 38.

The spelling of 712351171070021 in words is "seven hundred twelve trillion, three hundred fifty-one billion, one hundred seventy-one million, seventy thousand, twenty-one".