265351663621043 has 2 divisors, whose sum is σ = 265351663621044. Its totient is φ = 265351663621042.

The previous prime is 265351663621003. The next prime is 265351663621063. The reversal of 265351663621043 is 340126366153562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265351663621043 - 2³⁴ = 265334483751859 is a prime.

It is not a weakly prime, because it can be changed into another prime (265351663621003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132675831810521 + 132675831810522.

It is an arithmetic number, because the mean of its divisors is an integer number (132675831810522).

Almost surely, 2^{265351663621043} is an apocalyptic number.

265351663621043 is a deficient number, since it is larger than the sum of its proper divisors (1).

265351663621043 is an equidigital number, since it uses as much as digits as its factorization.

265351663621043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13996800, while the sum is 53.

The spelling of 265351663621043 in words is "two hundred sixty-five trillion, three hundred fifty-one billion, six hundred sixty-three million, six hundred twenty-one thousand, forty-three".