6533979451 has 4 divisors (see below), whose sum is σ = 6591802392. Its totient is φ = 6476156512.

The previous prime is 6533979421. The next prime is 6533979469. The reversal of 6533979451 is 1549793356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6533979451 - 2²⁹ = 5997108539 is a prime.

It is a super-2 number, since 2×6533979451² = 85385774932180522802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6533979421) 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, 28911301 + ... + 28911526.

It is an arithmetic number, because the mean of its divisors is an integer number (1647950598).

Almost surely, 2^6533979451 is an apocalyptic number.

6533979451 is a deficient number, since it is larger than the sum of its proper divisors (57822941).

6533979451 is a wasteful number, since it uses less digits than its factorization.

6533979451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57822940.

The product of its digits is 3061800, while the sum is 52.

The square root of 6533979451 is about 80833.0344042583. The cubic root of 6533979451 is about 1869.5019454866.

The spelling of 6533979451 in words is "six billion, five hundred thirty-three million, nine hundred seventy-nine thousand, four hundred fifty-one".