16674556900 has 81 divisors (see below), whose sum is σ = 37295021169. Its totient is φ = 6470962560.

The previous prime is 16674556897. The next prime is 16674556903. The reversal of 16674556900 is 965547661.

The square root of 16674556900 is 129130.

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

It is an interprime number because it is at equal distance from previous prime (16674556897) and next prime (16674556903).

It can be written as a sum of positive squares in 13 ways, for example, as 856967076 + 15817589824 = 29274^2 + 125768^2 .

It is a super-2 number, since 2×16674556900² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16674556903) 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, 47777926 + ... + 47778274.

Almost surely, 2^16674556900 is an apocalyptic number.

16674556900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16674556900 is the 129130-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16674556900

16674556900 is an abundant number, since it is smaller than the sum of its proper divisors (20620464269).

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

16674556900 is an equidigital number, since it uses as much as digits as its factorization.

16674556900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

Multiplying 16674556900 by its sum of digits (49), we get a square (817053288100 = 903910²).

The spelling of 16674556900 in words is "sixteen billion, six hundred seventy-four million, five hundred fifty-six thousand, nine hundred".