6521232947 has 2 divisors, whose sum is σ = 6521232948. Its totient is φ = 6521232946.

The previous prime is 6521232937. The next prime is 6521232959. The reversal of 6521232947 is 7492321256.

6521232947 is nontrivially palindromic in base 15.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6521232947 - 2¹⁰ = 6521231923 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (6521232937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260616473 + 3260616474.

It is an arithmetic number, because the mean of its divisors is an integer number (3260616474).

Almost surely, 2^6521232947 is an apocalyptic number.

6521232947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6521232947 is an equidigital number, since it uses as much as digits as its factorization.

6521232947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 6521232947 is about 80754.1512679070. The cubic root of 6521232947 is about 1868.2854777049.

The spelling of 6521232947 in words is "six billion, five hundred twenty-one million, two hundred thirty-two thousand, nine hundred forty-seven".