7151686609 has 2 divisors, whose sum is σ = 7151686610. Its totient is φ = 7151686608.

The previous prime is 7151686579. The next prime is 7151686627. The reversal of 7151686609 is 9066861517.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5469046209 + 1682640400 = 73953^2 + 41020^2 .

It is a cyclic number.

It is not a de Polignac number, because 7151686609 - 2⁹ = 7151686097 is a prime.

It is a super-2 number, since 2×7151686609² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7151686669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3575843304 + 3575843305.

It is an arithmetic number, because the mean of its divisors is an integer number (3575843305).

Almost surely, 2^7151686609 is an apocalyptic number.

It is an amenable number.

7151686609 is a deficient number, since it is larger than the sum of its proper divisors (1).

7151686609 is an equidigital number, since it uses as much as digits as its factorization.

7151686609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 7151686609 is about 84567.6451664583. The cubic root of 7151686609 is about 1926.6499922162.

The spelling of 7151686609 in words is "seven billion, one hundred fifty-one million, six hundred eighty-six thousand, six hundred nine".