265650709997 has 2 divisors, whose sum is σ = 265650709998. Its totient is φ = 265650709996.

The previous prime is 265650709943. The next prime is 265650710081. The reversal of 265650709997 is 799907056562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221940863236 + 43709846761 = 471106^2 + 209069^2 .

It is a cyclic number.

It is not a de Polignac number, because 265650709997 - 2¹⁶ = 265650644461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265650709097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132825354998 + 132825354999.

It is an arithmetic number, because the mean of its divisors is an integer number (132825354999).

Almost surely, 2^265650709997 is an apocalyptic number.

It is an amenable number.

265650709997 is a deficient number, since it is larger than the sum of its proper divisors (1).

265650709997 is an equidigital number, since it uses as much as digits as its factorization.

265650709997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64297800, while the sum is 65.

The spelling of 265650709997 in words is "two hundred sixty-five billion, six hundred fifty million, seven hundred nine thousand, nine hundred ninety-seven".