6465132405 has 24 divisors (see below), whose sum is σ = 11208164760. Its totient is φ = 3447475200.

The previous prime is 6465132391. The next prime is 6465132409. The reversal of 6465132405 is 5042315646.

6465132405 is a `hidden beast` number, since 64 + 65 + 132 + 405 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 988096356 + 5477036049 = 31434^2 + 74007^2 .

It is not a de Polignac number, because 6465132405 - 2²⁷ = 6330914677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6465132405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465132409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 406605 + ... + 422205.

It is an arithmetic number, because the mean of its divisors is an integer number (467006865).

Almost surely, 2^6465132405 is an apocalyptic number.

It is an amenable number.

6465132405 is a deficient number, since it is larger than the sum of its proper divisors (4743032355).

6465132405 is a wasteful number, since it uses less digits than its factorization.

6465132405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24821 (or 24818 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 6465132405 is about 80406.0470673693. The cubic root of 6465132405 is about 1862.9125760779.

The spelling of 6465132405 in words is "six billion, four hundred sixty-five million, one hundred thirty-two thousand, four hundred five".