265155421276 has 48 divisors (see below), whose sum is σ = 476667749376. Its totient is φ = 128999790144.

The previous prime is 265155421249. The next prime is 265155421303. The reversal of 265155421276 is 672124551562.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (265155421249) and next prime (265155421303).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24314041 + ... + 24324943.

It is an arithmetic number, because the mean of its divisors is an integer number (9930578112).

Almost surely, 2^265155421276 is an apocalyptic number.

It is an amenable number.

265155421276 is a deficient number, since it is larger than the sum of its proper divisors (211512328100).

265155421276 is a wasteful number, since it uses less digits than its factorization.

265155421276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11698 (or 11696 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 46.

The spelling of 265155421276 in words is "two hundred sixty-five billion, one hundred fifty-five million, four hundred twenty-one thousand, two hundred seventy-six".