265241436540 has 96 divisors (see below), whose sum is σ = 767000586240. Its totient is φ = 68448247296.

The previous prime is 265241436539. The next prime is 265241436631. The reversal of 265241436540 is 45634142562.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 265241436492 and 265241436501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277432 + ... + 779391.

It is an arithmetic number, because the mean of its divisors is an integer number (7989589440).

Almost surely, 2^265241436540 is an apocalyptic number.

265241436540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265241436540 is an abundant number, since it is smaller than the sum of its proper divisors (501759149700).

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

265241436540 is a wasteful number, since it uses less digits than its factorization.

265241436540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056971 (or 1056969 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 265241436540 in words is "two hundred sixty-five billion, two hundred forty-one million, four hundred thirty-six thousand, five hundred forty".