260521533426 has 128 divisors (see below), whose sum is σ = 687386787840. Its totient is φ = 63770414400.

The previous prime is 260521533397. The next prime is 260521533473. The reversal of 260521533426 is 624335125062.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1598905 + ... + 1754291.

It is an arithmetic number, because the mean of its divisors is an integer number (5370209280).

Almost surely, 2^260521533426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260521533426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343693393920).

260521533426 is an abundant number, since it is smaller than the sum of its proper divisors (426865254414).

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

260521533426 is a wasteful number, since it uses less digits than its factorization.

260521533426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155620.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 260521533426 its reverse (624335125062), we get a palindrome (884856658488).

The spelling of 260521533426 in words is "two hundred sixty billion, five hundred twenty-one million, five hundred thirty-three thousand, four hundred twenty-six".