264677017643 has 2 divisors, whose sum is σ = 264677017644. Its totient is φ = 264677017642.

The previous prime is 264677017567. The next prime is 264677017721. The reversal of 264677017643 is 346710776462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264677017643 - 2²² = 264672823339 is a prime.

It is not a weakly prime, because it can be changed into another prime (264677017343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132338508821 + 132338508822.

It is an arithmetic number, because the mean of its divisors is an integer number (132338508822).

Almost surely, 2^264677017643 is an apocalyptic number.

264677017643 is a deficient number, since it is larger than the sum of its proper divisors (1).

264677017643 is an equidigital number, since it uses as much as digits as its factorization.

264677017643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 264677017643 in words is "two hundred sixty-four billion, six hundred seventy-seven million, seventeen thousand, six hundred forty-three".