8480445691 has 2 divisors, whose sum is σ = 8480445692. Its totient is φ = 8480445690.

The previous prime is 8480445643. The next prime is 8480445763. The reversal of 8480445691 is 1965440848.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8480445691 - 2²¹ = 8478348539 is a prime.

It is not a weakly prime, because it can be changed into another prime (8480445601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4240222845 + 4240222846.

It is an arithmetic number, because the mean of its divisors is an integer number (4240222846).

Almost surely, 2^8480445691 is an apocalyptic number.

8480445691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8480445691 is an equidigital number, since it uses as much as digits as its factorization.

8480445691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 8480445691 is about 92089.3353814653. The cubic root of 8480445691 is about 2039.2613700250.

The spelling of 8480445691 in words is "eight billion, four hundred eighty million, four hundred forty-five thousand, six hundred ninety-one".