264421766009 has 2 divisors, whose sum is σ = 264421766010. Its totient is φ = 264421766008.

The previous prime is 264421766003. The next prime is 264421766039. The reversal of 264421766009 is 900667124462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264224784784 + 196981225 = 514028^2 + 14035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264421766009 is a prime.

It is not a weakly prime, because it can be changed into another prime (264421766003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132210883004 + 132210883005.

It is an arithmetic number, because the mean of its divisors is an integer number (132210883005).

Almost surely, 2^264421766009 is an apocalyptic number.

It is an amenable number.

264421766009 is a deficient number, since it is larger than the sum of its proper divisors (1).

264421766009 is an equidigital number, since it uses as much as digits as its factorization.

264421766009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 264421766009 in words is "two hundred sixty-four billion, four hundred twenty-one million, seven hundred sixty-six thousand, nine".