265061534040 has 96 divisors (see below), whose sum is σ = 862199769600. Its totient is φ = 70621555200.

The previous prime is 265061534039. The next prime is 265061534057. The reversal of 265061534040 is 40435160562.

265061534040 is a `hidden beast` number, since 2 + 6 + 5 + 0 + 615 + 34 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 265061533986 and 265061534004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94516 + ... + 734204.

It is an arithmetic number, because the mean of its divisors is an integer number (8981247600).

Almost surely, 2^265061534040 is an apocalyptic number.

265061534040 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 265061534040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431099884800).

265061534040 is an abundant number, since it is smaller than the sum of its proper divisors (597138235560).

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

265061534040 is a wasteful number, since it uses less digits than its factorization.

265061534040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640857 (or 640850 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 265061534040 in words is "two hundred sixty-five billion, sixty-one million, five hundred thirty-four thousand, forty".