13261531521350 has 48 divisors (see below), whose sum is σ = 28506971196000. Its totient is φ = 4495723034880.

The previous prime is 13261531521311. The next prime is 13261531521367. The reversal of 13261531521350 is 5312513516231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212834525 + ... + 212896824.

It is an arithmetic number, because the mean of its divisors is an integer number (593895233250).

Almost surely, 2^{13261531521350} is an apocalyptic number.

13261531521350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13261531521350 is an abundant number, since it is smaller than the sum of its proper divisors (15245439674650).

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

13261531521350 is a wasteful number, since it uses less digits than its factorization.

13261531521350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425731457 (or 425731452 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 13261531521350 in words is "thirteen trillion, two hundred sixty-one billion, five hundred thirty-one million, five hundred twenty-one thousand, three hundred fifty".