16800555377903 has 16 divisors (see below), whose sum is σ = 18462492518400. Its totient is φ = 15161086735680.

The previous prime is 16800555377899. The next prime is 16800555377917. The reversal of 16800555377903 is 30977355500861.

It is a cyclic number.

It is not a de Polignac number, because 16800555377903 - 2² = 16800555377899 is a prime.

It is a super-2 number, since 2×16800555377903² (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 (16800555377993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9455675 + ... + 11091027.

It is an arithmetic number, because the mean of its divisors is an integer number (1153905782400).

Almost surely, 2^{16800555377903} is an apocalyptic number.

16800555377903 is a deficient number, since it is larger than the sum of its proper divisors (1661937140497).

16800555377903 is a wasteful number, since it uses less digits than its factorization.

16800555377903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642222.

The product of its (nonzero) digits is 23814000, while the sum is 59.

The spelling of 16800555377903 in words is "sixteen trillion, eight hundred billion, five hundred fifty-five million, three hundred seventy-seven thousand, nine hundred three".