12521410320 has 80 divisors (see below), whose sum is σ = 38827247040. Its totient is φ = 3338107392.

The previous prime is 12521410313. The next prime is 12521410331. The reversal of 12521410320 is 2301412521.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1483071 + ... + 1491489.

It is an arithmetic number, because the mean of its divisors is an integer number (485340588).

Almost surely, 2^12521410320 is an apocalyptic number.

12521410320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12521410320 is an abundant number, since it is smaller than the sum of its proper divisors (26305836720).

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

12521410320 is a wasteful number, since it uses less digits than its factorization.

12521410320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14632 (or 14626 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12521410320 its reverse (2301412521), we get a palindrome (14822822841).

The spelling of 12521410320 in words is "twelve billion, five hundred twenty-one million, four hundred ten thousand, three hundred twenty".