16013538862864 has 15 divisors (see below), whose sum is σ = 31026262559943. Its totient is φ = 8006761428048.

The previous prime is 16013538862847. The next prime is 16013538862961. The reversal of 16013538862864 is 46826883531061.

It is a happy number.

The square root of 16013538862864 is 4001692.

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

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 15506557 + ... + 16506979.

Almost surely, 2^{16013538862864} is an apocalyptic number.

16013538862864 is the 4001692-nd square number.

It is an amenable number.

16013538862864 is a deficient number, since it is larger than the sum of its proper divisors (15012723697079).

16013538862864 is an frugal number, since it uses more digits than its factorization.

16013538862864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000854 (or 1000425 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 61.

The spelling of 16013538862864 in words is "sixteen trillion, thirteen billion, five hundred thirty-eight million, eight hundred sixty-two thousand, eight hundred sixty-four".