3721578751273 has 2 divisors, whose sum is σ = 3721578751274. Its totient is φ = 3721578751272.

The previous prime is 3721578751271. The next prime is 3721578751367.

It is a happy number.

3721578751273 is nontrivially palindromic in base 10.

3721578751273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2023881807424 + 1697696943849 = 1422632^2 + 1302957^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 3721578751273 - 2¹ = 3721578751271 is a prime.

Together with 3721578751271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3721578751271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860789375636 + 1860789375637.

It is an arithmetic number, because the mean of its divisors is an integer number (1860789375637).

Almost surely, 2^{3721578751273} is an apocalyptic number.

It is an amenable number.

3721578751273 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721578751273 is an equidigital number, since it uses as much as digits as its factorization.

3721578751273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17287200, while the sum is 58.

The spelling of 3721578751273 in words is "three trillion, seven hundred twenty-one billion, five hundred seventy-eight million, seven hundred fifty-one thousand, two hundred seventy-three".