16545651600077 has 8 divisors (see below), whose sum is σ = 16594993968696. Its totient is φ = 16496310684672.

The previous prime is 16545651600067. The next prime is 16545651600089. The reversal of 16545651600077 is 77000615654561.

It can be written as a sum of positive squares in 4 ways, for example, as 6509611343236 + 10036040256841 = 2551394^2 + 3167971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16545651600077 - 2¹⁰ = 16545651599053 is a prime.

It is a super-2 number, since 2×16545651600077² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545651600047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25096853 + ... + 25747685.

It is an arithmetic number, because the mean of its divisors is an integer number (2074374246087).

Almost surely, 2^{16545651600077} is an apocalyptic number.

It is an amenable number.

16545651600077 is a deficient number, since it is larger than the sum of its proper divisors (49342368619).

16545651600077 is an equidigital number, since it uses as much as digits as its factorization.

16545651600077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726607.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 16545651600077 in words is "sixteen trillion, five hundred forty-five billion, six hundred fifty-one million, six hundred thousand, seventy-seven".