16003552197136 has 45 divisors (see below), whose sum is σ = 36069482984301. Its totient is φ = 6858617222016.

The previous prime is 16003552197133. The next prime is 16003552197161. The reversal of 16003552197136 is 63179125530061.

The square root of 16003552197136 is 4000444.

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., 14055450883600 + 1948101313536 = 3749060^2 + 1395744^2 .

It is a super-2 number, since 2×16003552197136² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16003552197136.

It is not an unprimeable number, because it can be changed into a prime (16003552197133) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 111940996 + ... + 112083868.

Almost surely, 2^{16003552197136} is an apocalyptic number.

16003552197136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16003552197136 is the 4000444-th square number.

It is an amenable number.

16003552197136 is an abundant number, since it is smaller than the sum of its proper divisors (20065930787165).

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

16003552197136 is an frugal number, since it uses more digits than its factorization.

16003552197136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285768 (or 142882 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 49.

Multiplying 16003552197136 by its sum of digits (49), we get a square (784174057659664 = 28003108²).

16003552197136 divided by its sum of digits (49) gives a square (326603106064 = 571492²).

The spelling of 16003552197136 in words is "sixteen trillion, three billion, five hundred fifty-two million, one hundred ninety-seven thousand, one hundred thirty-six".