6481172899 has 2 divisors, whose sum is σ = 6481172900. Its totient is φ = 6481172898.

The previous prime is 6481172861. The next prime is 6481172903. The reversal of 6481172899 is 9982711846.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6481172899 - 2¹⁵ = 6481140131 is a prime.

It is not a weakly prime, because it can be changed into another prime (6482172899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240586449 + 3240586450.

It is an arithmetic number, because the mean of its divisors is an integer number (3240586450).

Almost surely, 2^6481172899 is an apocalyptic number.

6481172899 is a deficient number, since it is larger than the sum of its proper divisors (1).

6481172899 is an equidigital number, since it uses as much as digits as its factorization.

6481172899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 55.

The square root of 6481172899 is about 80505.7320878458. The cubic root of 6481172899 is about 1864.4519804252.

The spelling of 6481172899 in words is "six billion, four hundred eighty-one million, one hundred seventy-two thousand, eight hundred ninety-nine".