265214943840 has 288 divisors, whose sum is σ = 1049463717120. Its totient is φ = 55109514240.

The previous prime is 265214943797. The next prime is 265214943841. The reversal of 265214943840 is 48349412562.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 265214943840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265214943841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80391 + ... + 732729.

It is an arithmetic number, because the mean of its divisors is an integer number (3643971240).

Almost surely, 2^265214943840 is an apocalyptic number.

265214943840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265214943840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524731858560).

265214943840 is an abundant number, since it is smaller than the sum of its proper divisors (784248773280).

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

265214943840 is a wasteful number, since it uses less digits than its factorization.

265214943840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652386 (or 652367 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 265214943840 in words is "two hundred sixty-five billion, two hundred fourteen million, nine hundred forty-three thousand, eight hundred forty".