6461814451 has 2 divisors, whose sum is σ = 6461814452. Its totient is φ = 6461814450.

The previous prime is 6461814449. The next prime is 6461814497. The reversal of 6461814451 is 1544181646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6461814451 - 2¹ = 6461814449 is a prime.

Together with 6461814449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6461811451) 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, 3230907225 + 3230907226.

It is an arithmetic number, because the mean of its divisors is an integer number (3230907226).

Almost surely, 2^6461814451 is an apocalyptic number.

6461814451 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461814451 is an equidigital number, since it uses as much as digits as its factorization.

6461814451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 40.

The square root of 6461814451 is about 80385.4119290310. The cubic root of 6461814451 is about 1862.5938346851.

The spelling of 6461814451 in words is "six billion, four hundred sixty-one million, eight hundred fourteen thousand, four hundred fifty-one".