2664467521 has 2 divisors, whose sum is σ = 2664467522. Its totient is φ = 2664467520.

The previous prime is 2664467513. The next prime is 2664467537. The reversal of 2664467521 is 1257644662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1669948225 + 994519296 = 40865^2 + 31536^2 .

It is a cyclic number.

It is not a de Polignac number, because 2664467521 - 2³ = 2664467513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2664467501) 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 as a sum of consecutive naturals, namely, 1332233760 + 1332233761.

It is an arithmetic number, because the mean of its divisors is an integer number (1332233761).

Almost surely, 2^2664467521 is an apocalyptic number.

It is an amenable number.

2664467521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664467521 is an equidigital number, since it uses as much as digits as its factorization.

2664467521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 2664467521 is about 51618.4804212600. The cubic root of 2664467521 is about 1386.3412432533.

The spelling of 2664467521 in words is "two billion, six hundred sixty-four million, four hundred sixty-seven thousand, five hundred twenty-one".