3709625687473 has 2 divisors, whose sum is σ = 3709625687474. Its totient is φ = 3709625687472.

The previous prime is 3709625687377. The next prime is 3709625687489. The reversal of 3709625687473 is 3747865269073.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3393232937329 + 316392750144 = 1842073^2 + 562488^2 .

It is an emirp because it is prime and its reverse (3747865269073) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3709625687473 - 2⁹ = 3709625686961 is a prime.

It is a super-2 number, since 2×3709625687473² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3709625687399 and 3709625687408.

It is not a weakly prime, because it can be changed into another prime (3709625187473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1854812843736 + 1854812843737.

It is an arithmetic number, because the mean of its divisors is an integer number (1854812843737).

Almost surely, 2^{3709625687473} is an apocalyptic number.

It is an amenable number.

3709625687473 is a deficient number, since it is larger than the sum of its proper divisors (1).

3709625687473 is an equidigital number, since it uses as much as digits as its factorization.

3709625687473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320060160, while the sum is 67.

The spelling of 3709625687473 in words is "three trillion, seven hundred nine billion, six hundred twenty-five million, six hundred eighty-seven thousand, four hundred seventy-three".