6451640341 has 2 divisors, whose sum is σ = 6451640342. Its totient is φ = 6451640340.

The previous prime is 6451640303. The next prime is 6451640347. The reversal of 6451640341 is 1430461546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6327407025 + 124233316 = 79545^2 + 11146^2 .

It is a cyclic number.

It is not a de Polignac number, because 6451640341 - 2³¹ = 4304156693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6451640297 and 6451640306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6451640347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225820170 + 3225820171.

It is an arithmetic number, because the mean of its divisors is an integer number (3225820171).

Almost surely, 2^6451640341 is an apocalyptic number.

It is an amenable number.

6451640341 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451640341 is an equidigital number, since it uses as much as digits as its factorization.

6451640341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 6451640341 is about 80322.1036888352. The cubic root of 6451640341 is about 1861.6157714744.

The spelling of 6451640341 in words is "six billion, four hundred fifty-one million, six hundred forty thousand, three hundred forty-one".