6451381463 has 2 divisors, whose sum is σ = 6451381464. Its totient is φ = 6451381462.

The previous prime is 6451381403. The next prime is 6451381477. The reversal of 6451381463 is 3641831546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6451381463 - 2¹⁴ = 6451365079 is a prime.

It is a super-2 number, since 2×6451381463² = 83240645562280040738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6451381463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6451381403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225690731 + 3225690732.

It is an arithmetic number, because the mean of its divisors is an integer number (3225690732).

Almost surely, 2^6451381463 is an apocalyptic number.

6451381463 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451381463 is an equidigital number, since it uses as much as digits as its factorization.

6451381463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The square root of 6451381463 is about 80320.4921735419. The cubic root of 6451381463 is about 1861.5908714599.

The spelling of 6451381463 in words is "six billion, four hundred fifty-one million, three hundred eighty-one thousand, four hundred sixty-three".