13612321702144 has 81 divisors (see below), whose sum is σ = 29867586315679. Its totient is φ = 6187123796480.

The previous prime is 13612321702123. The next prime is 13612321702151. The reversal of 13612321702144 is 44120712321631.

The square root of 13612321702144 is 3689488.

It is a perfect power (a square), and thus also a powerful number.

It is a super-5 number, since 5×13612321702144⁵ (a number of 67 digits) contains 55555 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 649339407 + ... + 649360369.

Almost surely, 2^{13612321702144} is an apocalyptic number.

13612321702144 is the 3689488-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13612321702144

13612321702144 is an abundant number, since it is smaller than the sum of its proper divisors (16255264613535).

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

13612321702144 is an frugal number, since it uses more digits than its factorization.

13612321702144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41964 (or 20976 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 13612321702144 in words is "thirteen trillion, six hundred twelve billion, three hundred twenty-one million, seven hundred two thousand, one hundred forty-four".