6465064131 has 24 divisors (see below), whose sum is σ = 9824758944. Its totient is φ = 4091264640.

The previous prime is 6465064121. The next prime is 6465064157. The reversal of 6465064131 is 1314605646.

It is a happy number.

6465064131 is a `hidden beast` number, since 6 + 4 + 6 + 5 + 0 + 641 + 3 + 1 = 666.

It is not a de Polignac number, because 6465064131 - 2¹⁴ = 6465047747 is a prime.

It is a super-2 number, since 2×6465064131² = 83594108435885570322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6465064121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223111 + ... + 250416.

It is an arithmetic number, because the mean of its divisors is an integer number (409364956).

Almost surely, 2^6465064131 is an apocalyptic number.

6465064131 is a deficient number, since it is larger than the sum of its proper divisors (3359694813).

6465064131 is a wasteful number, since it uses less digits than its factorization.

6465064131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473611 (or 473608 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6465064131 is about 80405.6225086281. The cubic root of 6465064131 is about 1862.9060183911.

Adding to 6465064131 its reverse (1314605646), we get a palindrome (7779669777).

The spelling of 6465064131 in words is "six billion, four hundred sixty-five million, sixty-four thousand, one hundred thirty-one".