6461026249 has 2 divisors, whose sum is σ = 6461026250. Its totient is φ = 6461026248.

The previous prime is 6461026213. The next prime is 6461026267. The reversal of 6461026249 is 9426201646.

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., 5208220224 + 1252806025 = 72168^2 + 35395^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461026249 - 2⁹ = 6461025737 is a prime.

It is not a weakly prime, because it can be changed into another prime (6461026849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230513124 + 3230513125.

It is an arithmetic number, because the mean of its divisors is an integer number (3230513125).

Almost surely, 2^6461026249 is an apocalyptic number.

It is an amenable number.

6461026249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461026249 is an equidigital number, since it uses as much as digits as its factorization.

6461026249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 6461026249 is about 80380.5091362328. The cubic root of 6461026249 is about 1862.5180995133.

The spelling of 6461026249 in words is "six billion, four hundred sixty-one million, twenty-six thousand, two hundred forty-nine".