265683198493 has 2 divisors, whose sum is σ = 265683198494. Its totient is φ = 265683198492.

The previous prime is 265683198383. The next prime is 265683198523. The reversal of 265683198493 is 394891386562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233440686649 + 32242511844 = 483157^2 + 179562^2 .

It is a cyclic number.

It is not a de Polignac number, because 265683198493 - 2¹³ = 265683190301 is a prime.

It is a super-2 number, since 2×265683198493² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265683192493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132841599246 + 132841599247.

It is an arithmetic number, because the mean of its divisors is an integer number (132841599247).

Almost surely, 2^265683198493 is an apocalyptic number.

It is an amenable number.

265683198493 is a deficient number, since it is larger than the sum of its proper divisors (1).

265683198493 is an equidigital number, since it uses as much as digits as its factorization.

265683198493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67184640, while the sum is 64.

The spelling of 265683198493 in words is "two hundred sixty-five billion, six hundred eighty-three million, one hundred ninety-eight thousand, four hundred ninety-three".