16432455377761 has 8 divisors (see below), whose sum is σ = 16452878424840. Its totient is φ = 16412035243008.

The previous prime is 16432455377759. The next prime is 16432455377777. The reversal of 16432455377761 is 16777355423461.

It can be written as a sum of positive squares in 4 ways, for example, as 12576276736 + 16419879101025 = 112144^2 + 4052145^2 .

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 16432455377761 - 2¹ = 16432455377759 is a prime.

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 16432455377761.

It is not an unprimeable number, because it can be changed into a prime (16432455377731) 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, 10674525 + ... + 12116533.

It is an arithmetic number, because the mean of its divisors is an integer number (2056609803105).

Almost surely, 2^{16432455377761} is an apocalyptic number.

It is an amenable number.

16432455377761 is a deficient number, since it is larger than the sum of its proper divisors (20423047079).

16432455377761 is a wasteful number, since it uses less digits than its factorization.

16432455377761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456163.

The product of its digits is 88905600, while the sum is 61.

The spelling of 16432455377761 in words is "sixteen trillion, four hundred thirty-two billion, four hundred fifty-five million, three hundred seventy-seven thousand, seven hundred sixty-one".