7140735821 has 2 divisors, whose sum is σ = 7140735822. Its totient is φ = 7140735820.

The previous prime is 7140735817. The next prime is 7140735829. The reversal of 7140735821 is 1285370417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6094924900 + 1045810921 = 78070^2 + 32339^2 .

It is a cyclic number.

It is not a de Polignac number, because 7140735821 - 2² = 7140735817 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7140735829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570367910 + 3570367911.

It is an arithmetic number, because the mean of its divisors is an integer number (3570367911).

Almost surely, 2^7140735821 is an apocalyptic number.

It is an amenable number.

7140735821 is a deficient number, since it is larger than the sum of its proper divisors (1).

7140735821 is an equidigital number, since it uses as much as digits as its factorization.

7140735821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 7140735821 is about 84502.8746315769. The cubic root of 7140735821 is about 1925.6661164466. Note that the first 3 decimals are identical.

The spelling of 7140735821 in words is "seven billion, one hundred forty million, seven hundred thirty-five thousand, eight hundred twenty-one".