7112371611409 has 27 divisors (see below), whose sum is σ = 7361977368753. Its totient is φ = 6871136900544.

The previous prime is 7112371611403. The next prime is 7112371611439. The reversal of 7112371611409 is 9041161732117.

The square root of 7112371611409 is 2666903.

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

It can be written as a sum of positive squares in 4 ways, for example, as 191578663809 + 6920792947600 = 437697^2 + 2630740^2 .

It is not a de Polignac number, because 7112371611409 - 2⁵ = 7112371611377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7112371611403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12499774077 + ... + 12499774645.

Almost surely, 2^{7112371611409} is an apocalyptic number.

7112371611409 is the 2666903-rd square number.

7112371611409 is the 1333452-nd centered octagonal number.

It is an amenable number.

7112371611409 is a deficient number, since it is larger than the sum of its proper divisors (249605757344).

7112371611409 is an frugal number, since it uses more digits than its factorization.

7112371611409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 7112371611409 in words is "seven trillion, one hundred twelve billion, three hundred seventy-one million, six hundred eleven thousand, four hundred nine".