7057681121 has 4 divisors (see below), whose sum is σ = 7472838852. Its totient is φ = 6642523392.

The previous prime is 7057681109. The next prime is 7057681129. The reversal of 7057681121 is 1211867507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1211867507 = 131 ⋅9250897.

It can be written as a sum of positive squares in 2 ways, for example, as 5980856896 + 1076824225 = 77336^2 + 32815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7057681121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7057681129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207578840 + ... + 207578873.

It is an arithmetic number, because the mean of its divisors is an integer number (1868209713).

Almost surely, 2^7057681121 is an apocalyptic number.

It is an amenable number.

7057681121 is a deficient number, since it is larger than the sum of its proper divisors (415157731).

7057681121 is a wasteful number, since it uses less digits than its factorization.

7057681121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415157730.

The product of its (nonzero) digits is 23520, while the sum is 38.

The square root of 7057681121 is about 84010.0060766573. The cubic root of 7057681121 is about 1918.1711028552.

The spelling of 7057681121 in words is "seven billion, fifty-seven million, six hundred eighty-one thousand, one hundred twenty-one".