6465662251 has 2 divisors, whose sum is σ = 6465662252. Its totient is φ = 6465662250.

The previous prime is 6465662233. The next prime is 6465662279. The reversal of 6465662251 is 1522665646.

It is a happy number.

6465662251 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6465662251 - 2⁷ = 6465662123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6465662198 and 6465662207.

It is not a weakly prime, because it can be changed into another prime (6465662851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232831125 + 3232831126.

It is an arithmetic number, because the mean of its divisors is an integer number (3232831126).

Almost surely, 2^6465662251 is an apocalyptic number.

6465662251 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465662251 is an equidigital number, since it uses as much as digits as its factorization.

6465662251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 43.

The square root of 6465662251 is about 80409.3418142444. The cubic root of 6465662251 is about 1862.9634659773.

The spelling of 6465662251 in words is "six billion, four hundred sixty-five million, six hundred sixty-two thousand, two hundred fifty-one".