265143104162356 has 144 divisors (see below), whose sum is σ = 551591699484672. Its totient is φ = 109235835334080.

The previous prime is 265143104162341. The next prime is 265143104162381. The reversal of 265143104162356 is 653261401341562.

It is a happy number.

It is a super-2 number, since 2×265143104162356² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9048311601 + ... + 9048340903.

It is an arithmetic number, because the mean of its divisors is an integer number (3830497913088).

Almost surely, 2^{265143104162356} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265143104162356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275795849742336).

265143104162356 is an abundant number, since it is smaller than the sum of its proper divisors (286448595322316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265143104162356 is a wasteful number, since it uses less digits than its factorization.

265143104162356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31602 (or 31569 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 265143104162356 in words is "two hundred sixty-five trillion, one hundred forty-three billion, one hundred four million, one hundred sixty-two thousand, three hundred fifty-six".