265265764646 has 8 divisors (see below), whose sum is σ = 418840681080. Its totient is φ = 125652204288.

The previous prime is 265265764613. The next prime is 265265764649. The reversal of 265265764646 is 646467562562.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265265764649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3490338971 + ... + 3490339046.

It is an arithmetic number, because the mean of its divisors is an integer number (52355085135).

Almost surely, 2^265265764646 is an apocalyptic number.

265265764646 is a deficient number, since it is larger than the sum of its proper divisors (153574916434).

265265764646 is a wasteful number, since it uses less digits than its factorization.

265265764646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980678038.

The product of its digits is 87091200, while the sum is 59.

The spelling of 265265764646 in words is "two hundred sixty-five billion, two hundred sixty-five million, seven hundred sixty-four thousand, six hundred forty-six".