6651253633 has 4 divisors (see below), whose sum is σ = 6666686208. Its totient is φ = 6635821060.

The previous prime is 6651253591. The next prime is 6651253657. The reversal of 6651253633 is 3363521566.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-6651253633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6651259633) 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 3 ways as a sum of consecutive naturals, for example, 7715641 + ... + 7716502.

It is an arithmetic number, because the mean of its divisors is an integer number (1666671552).

Almost surely, 2^6651253633 is an apocalyptic number.

It is an amenable number.

6651253633 is a deficient number, since it is larger than the sum of its proper divisors (15432575).

6651253633 is a wasteful number, since it uses less digits than its factorization.

6651253633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432574.

The product of its digits is 291600, while the sum is 40.

The square root of 6651253633 is about 81555.2183063720. The cubic root of 6651253633 is about 1880.6205165545.

The spelling of 6651253633 in words is "six billion, six hundred fifty-one million, two hundred fifty-three thousand, six hundred thirty-three".