6545333653 has 4 divisors (see below), whose sum is σ = 6545560768. Its totient is φ = 6545106540.

The previous prime is 6545333621. The next prime is 6545333723. The reversal of 6545333653 is 3563335456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6545333653 - 2⁵ = 6545333621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545333453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62751 + ... + 130492.

It is an arithmetic number, because the mean of its divisors is an integer number (1636390192).

Almost surely, 2^6545333653 is an apocalyptic number.

It is an amenable number.

6545333653 is a deficient number, since it is larger than the sum of its proper divisors (227115).

6545333653 is a wasteful number, since it uses less digits than its factorization.

6545333653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227114.

The product of its digits is 1458000, while the sum is 43.

The square root of 6545333653 is about 80903.2363567738. The cubic root of 6545333653 is about 1870.5842067852.

The spelling of 6545333653 in words is "six billion, five hundred forty-five million, three hundred thirty-three thousand, six hundred fifty-three".