13138721224750 has 64 divisors (see below), whose sum is σ = 27286431793920. Its totient is φ = 4696738500000.

The previous prime is 13138721224711. The next prime is 13138721224777. The reversal of 13138721224750 is 5742212783131.

It is a happy number.

It is a super-2 number, since 2×13138721224750² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13138721224750.

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, 40326876 + ... + 40651375.

It is an arithmetic number, because the mean of its divisors is an integer number (426350496780).

Almost surely, 2^{13138721224750} is an apocalyptic number.

13138721224750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13138721224750 is an abundant number, since it is smaller than the sum of its proper divisors (14147710569170).

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

13138721224750 is a wasteful number, since it uses less digits than its factorization.

13138721224750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80978338 (or 80978328 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 13138721224750 in words is "thirteen trillion, one hundred thirty-eight billion, seven hundred twenty-one million, two hundred twenty-four thousand, seven hundred fifty".