7099707521 has 2 divisors, whose sum is σ = 7099707522. Its totient is φ = 7099707520.

The previous prime is 7099707509. The next prime is 7099707541. The reversal of 7099707521 is 1257079907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6425785921 + 673921600 = 80161^2 + 25960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7099707521 is a prime.

It is not a weakly prime, because it can be changed into another prime (7099707541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3549853760 + 3549853761.

It is an arithmetic number, because the mean of its divisors is an integer number (3549853761).

Almost surely, 2^7099707521 is an apocalyptic number.

It is an amenable number.

7099707521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7099707521 is an equidigital number, since it uses as much as digits as its factorization.

7099707521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 277830, while the sum is 47.

The square root of 7099707521 is about 84259.7621703266. The cubic root of 7099707521 is about 1921.9709506817.

The spelling of 7099707521 in words is "seven billion, ninety-nine million, seven hundred seven thousand, five hundred twenty-one".