265456666547 has 2 divisors, whose sum is σ = 265456666548. Its totient is φ = 265456666546.

The previous prime is 265456666471. The next prime is 265456666567. The reversal of 265456666547 is 745666654562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265456666547 - 2¹⁸ = 265456404403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265456666547.

It is not a weakly prime, because it can be changed into another prime (265456666567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132728333273 + 132728333274.

It is an arithmetic number, because the mean of its divisors is an integer number (132728333274).

Almost surely, 2^265456666547 is an apocalyptic number.

265456666547 is a deficient number, since it is larger than the sum of its proper divisors (1).

265456666547 is an equidigital number, since it uses as much as digits as its factorization.

265456666547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728000, while the sum is 62.

The spelling of 265456666547 in words is "two hundred sixty-five billion, four hundred fifty-six million, six hundred sixty-six thousand, five hundred forty-seven".