6663456541 has 32 divisors (see below), whose sum is σ = 8443904000. Its totient is φ = 5236222320.

The previous prime is 6663456521. The next prime is 6663456551. The reversal of 6663456541 is 1456543666.

It is a happy number.

It is not a de Polignac number, because 6663456541 - 2⁷ = 6663456413 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6663456491 and 6663456500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663456521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185536 + ... + 218518.

It is an arithmetic number, because the mean of its divisors is an integer number (263872000).

Almost surely, 2^6663456541 is an apocalyptic number.

It is an amenable number.

6663456541 is a deficient number, since it is larger than the sum of its proper divisors (1780447459).

6663456541 is a wasteful number, since it uses less digits than its factorization.

6663456541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33054 (or 33040 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 46.

The square root of 6663456541 is about 81629.9978010535. The cubic root of 6663456541 is about 1881.7699248717.

The spelling of 6663456541 in words is "six billion, six hundred sixty-three million, four hundred fifty-six thousand, five hundred forty-one".