7243071681 has 16 divisors (see below), whose sum is σ = 10266373440. Its totient is φ = 4529275200.

The previous prime is 7243071623. The next prime is 7243071701. The reversal of 7243071681 is 1861703427.

It is not a de Polignac number, because 7243071681 - 2⁷ = 7243071553 is a prime.

It is a super-2 number, since 2×7243071681² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7243071181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623310 + ... + 634823.

It is an arithmetic number, because the mean of its divisors is an integer number (641648340).

Almost surely, 2^7243071681 is an apocalyptic number.

It is an amenable number.

7243071681 is a deficient number, since it is larger than the sum of its proper divisors (3023301759).

7243071681 is a wasteful number, since it uses less digits than its factorization.

7243071681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258256.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 7243071681 is about 85106.2376151126. The cubic root of 7243071681 is about 1934.8216027133.

The spelling of 7243071681 in words is "seven billion, two hundred forty-three million, seventy-one thousand, six hundred eighty-one".