6506561633 has 8 divisors (see below), whose sum is σ = 7644072576. Its totient is φ = 5460051600.

The previous prime is 6506561569. The next prime is 6506561639. The reversal of 6506561633 is 3361656056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6506561633 - 2⁶ = 6506561569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6506561639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22750073 + ... + 22750358.

It is an arithmetic number, because the mean of its divisors is an integer number (955509072).

Almost surely, 2^6506561633 is an apocalyptic number.

It is an amenable number.

6506561633 is a deficient number, since it is larger than the sum of its proper divisors (1137510943).

6506561633 is a wasteful number, since it uses less digits than its factorization.

6506561633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45500455.

The product of its (nonzero) digits is 291600, while the sum is 41.

The square root of 6506561633 is about 80663.2607387031. The cubic root of 6506561633 is about 1866.8833510189.

The spelling of 6506561633 in words is "six billion, five hundred six million, five hundred sixty-one thousand, six hundred thirty-three".