265067433409 has 3 divisors (see below), whose sum is σ = 265067948257. Its totient is φ = 265066918562.

The previous prime is 265067433403. The next prime is 265067433427. The reversal of 265067433409 is 904334760562.

The square root of 265067433409 is 514847.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-265067433409 is a prime.

It is a super-2 number, since 2×265067433409² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265067433403) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 257424 + ... + 772270.

Almost surely, 2^265067433409 is an apocalyptic number.

265067433409 is the 514847-th square number.

265067433409 is the 257424-th centered octagonal number.

It is an amenable number.

265067433409 is a deficient number, since it is larger than the sum of its proper divisors (514848).

265067433409 is an frugal number, since it uses more digits than its factorization.

265067433409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029694 (or 514847 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 49.

Multiplying 265067433409 by its sum of digits (49), we get a square (12988304237041 = 3603929²).

The spelling of 265067433409 in words is "two hundred sixty-five billion, sixty-seven million, four hundred thirty-three thousand, four hundred nine".