265480349904 has 640 divisors, whose sum is σ = 988153896960. Its totient is φ = 67067066880.

The previous prime is 265480349899. The next prime is 265480349917. The reversal of 265480349904 is 409943084562.

265480349904 is a `hidden beast` number, since 2 + 6 + 548 + 0 + 3 + 4 + 9 + 90 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 99690877 + ... + 99693539.

It is an arithmetic number, because the mean of its divisors is an integer number (1543990464).

Almost surely, 2^265480349904 is an apocalyptic number.

265480349904 is a gapful number since it is divisible by the number (24) 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 265480349904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494076948480).

265480349904 is an abundant number, since it is smaller than the sum of its proper divisors (722673547056).

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

265480349904 is a wasteful number, since it uses less digits than its factorization.

265480349904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 265480349904 in words is "two hundred sixty-five billion, four hundred eighty million, three hundred forty-nine thousand, nine hundred four".