7671617641 has 2 divisors, whose sum is σ = 7671617642. Its totient is φ = 7671617640.

The previous prime is 7671617609. The next prime is 7671617717. The reversal of 7671617641 is 1467161767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6529448025 + 1142169616 = 80805^2 + 33796^2 .

It is a cyclic number.

It is not a de Polignac number, because 7671617641 - 2⁵ = 7671617609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7671617591 and 7671617600.

It is not a weakly prime, because it can be changed into another prime (7671617141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835808820 + 3835808821.

It is an arithmetic number, because the mean of its divisors is an integer number (3835808821).

Almost surely, 2^7671617641 is an apocalyptic number.

It is an amenable number.

7671617641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7671617641 is an equidigital number, since it uses as much as digits as its factorization.

7671617641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 46.

The square root of 7671617641 is about 87587.7710699388. The cubic root of 7671617641 is about 1972.2515969427.

The spelling of 7671617641 in words is "seven billion, six hundred seventy-one million, six hundred seventeen thousand, six hundred forty-one".