265840073077 has 4 divisors (see below), whose sum is σ = 268278972940. Its totient is φ = 263401173216.

The previous prime is 265840073071. The next prime is 265840073089. The reversal of 265840073077 is 770370048562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60341957316 + 205498115761 = 245646^2 + 453319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265840073077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 265840073077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265840073071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219449768 + ... + 1219449985.

It is an arithmetic number, because the mean of its divisors is an integer number (67069743235).

Almost surely, 2^265840073077 is an apocalyptic number.

It is an amenable number.

265840073077 is a deficient number, since it is larger than the sum of its proper divisors (2438899863).

265840073077 is a wasteful number, since it uses less digits than its factorization.

265840073077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438899862.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 265840073077 in words is "two hundred sixty-five billion, eight hundred forty million, seventy-three thousand, seventy-seven".