712673008645 has 16 divisors (see below), whose sum is σ = 975168860400. Its totient is φ = 495323864064.

The previous prime is 712673008637. The next prime is 712673008693. The reversal of 712673008645 is 546800376217.

It can be written as a sum of positive squares in 8 ways, for example, as 46911661281 + 665761347364 = 216591^2 + 815942^2 .

It is a cyclic number.

It is not a de Polignac number, because 712673008645 - 2³ = 712673008637 is a prime.

It is a super-2 number, since 2×712673008645² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322475370 + ... + 322477579.

It is an arithmetic number, because the mean of its divisors is an integer number (60948053775).

Almost surely, 2^712673008645 is an apocalyptic number.

It is an amenable number.

712673008645 is a deficient number, since it is larger than the sum of its proper divisors (262495851755).

712673008645 is a wasteful number, since it uses less digits than its factorization.

712673008645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644952984.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 712673008645 in words is "seven hundred twelve billion, six hundred seventy-three million, eight thousand, six hundred forty-five".