6466651533 has 12 divisors (see below), whose sum is σ = 9343980828. Its totient is φ = 4309595520.

The previous prime is 6466651481. The next prime is 6466651559. The reversal of 6466651533 is 3351566646.

It can be written as a sum of positive squares in 2 ways, for example, as 3181298409 + 3285353124 = 56403^2 + 57318^2 .

It is not a de Polignac number, because 6466651533 - 2⁹ = 6466651021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466653533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97938 + ... + 150083.

It is an arithmetic number, because the mean of its divisors is an integer number (778665069).

Almost surely, 2^6466651533 is an apocalyptic number.

It is an amenable number.

6466651533 is a deficient number, since it is larger than the sum of its proper divisors (2877329295).

6466651533 is a wasteful number, since it uses less digits than its factorization.

6466651533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250924 (or 250921 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The square root of 6466651533 is about 80415.4931154439. The cubic root of 6466651533 is about 1863.0584756950.

The spelling of 6466651533 in words is "six billion, four hundred sixty-six million, six hundred fifty-one thousand, five hundred thirty-three".