13126612505220 has 72 divisors (see below), whose sum is σ = 41913043448640. Its totient is φ = 3316196842560.

The previous prime is 13126612505207. The next prime is 13126612505249. The reversal of 13126612505220 is 2250521662131.

13126612505220 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 6 + 6 + 125 + 0 + 522 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1919091976 + ... + 1919098815.

Almost surely, 2^{13126612505220} is an apocalyptic number.

13126612505220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13126612505220 is an abundant number, since it is smaller than the sum of its proper divisors (28786430943420).

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

13126612505220 is a wasteful number, since it uses less digits than its factorization.

13126612505220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838190825 (or 3838190820 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 13126612505220 in words is "thirteen trillion, one hundred twenty-six billion, six hundred twelve million, five hundred five thousand, two hundred twenty".