7671299749 has 2 divisors, whose sum is σ = 7671299750. Its totient is φ = 7671299748.

The previous prime is 7671299747. The next prime is 7671299777. The reversal of 7671299749 is 9479921767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4696360900 + 2974938849 = 68530^2 + 54543^2 .

It is a cyclic number.

It is not a de Polignac number, because 7671299749 - 2¹ = 7671299747 is a prime.

Together with 7671299747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7671299747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835649874 + 3835649875.

It is an arithmetic number, because the mean of its divisors is an integer number (3835649875).

Almost surely, 2^7671299749 is an apocalyptic number.

It is an amenable number.

7671299749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7671299749 is an equidigital number, since it uses as much as digits as its factorization.

7671299749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12002256, while the sum is 61.

The square root of 7671299749 is about 87585.9563457521. The cubic root of 7671299749 is about 1972.2243548974.

The spelling of 7671299749 in words is "seven billion, six hundred seventy-one million, two hundred ninety-nine thousand, seven hundred forty-nine".