13866004516 has 81 divisors (see below), whose sum is σ = 30612888369. Its totient is φ = 5476974048.

The previous prime is 13866004513. The next prime is 13866004543. The reversal of 13866004516 is 61540066831.

The square root of 13866004516 is 117754.

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

It can be written as a sum of positive squares in only one way, i.e., 2051184100 + 11814820416 = 45290^2 + 108696^2 .

It is not an unprimeable number, because it can be changed into a prime (13866004513) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21430905 + ... + 21431551.

Almost surely, 2^13866004516 is an apocalyptic number.

13866004516 is the 117754-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13866004516

13866004516 is an abundant number, since it is smaller than the sum of its proper divisors (16746883853).

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

13866004516 is an equidigital number, since it uses as much as digits as its factorization.

13866004516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 13866004516 in words is "thirteen billion, eight hundred sixty-six million, four thousand, five hundred sixteen".