16657454973700 has 72 divisors (see below), whose sum is σ = 36359687596680. Its totient is φ = 6623726054400.

The previous prime is 16657454973637. The next prime is 16657454973829. The reversal of 16657454973700 is 737945475661.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 642075279616 + 16015379694084 = 801296^2 + 4001922^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169992720 + ... + 170090680.

It is an arithmetic number, because the mean of its divisors is an integer number (504995661065).

Almost surely, 2^{16657454973700} is an apocalyptic number.

16657454973700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16657454973700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18179843798340).

16657454973700 is an abundant number, since it is smaller than the sum of its proper divisors (19702232622980).

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

16657454973700 is a wasteful number, since it uses less digits than its factorization.

16657454973700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107977 (or 107970 counting only the distinct ones).

The product of its (nonzero) digits is 133358400, while the sum is 64.

The spelling of 16657454973700 in words is "sixteen trillion, six hundred fifty-seven billion, four hundred fifty-four million, nine hundred seventy-three thousand, seven hundred".