16378777233 has 64 divisors (see below), whose sum is σ = 31436339200. Its totient is φ = 8184628800.

The previous prime is 16378777223. The next prime is 16378777241. The reversal of 16378777233 is 33277787361.

It is not a de Polignac number, because 16378777233 - 2⁶ = 16378777169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16378777233.

It is not an unprimeable number, because it can be changed into a prime (16378777223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128743 + ... + 222108.

It is an arithmetic number, because the mean of its divisors is an integer number (491192800).

Almost surely, 2^16378777233 is an apocalyptic number.

16378777233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16378777233 is a deficient number, since it is larger than the sum of its proper divisors (15057561967).

16378777233 is a wasteful number, since it uses less digits than its factorization.

16378777233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350899 (or 350893 counting only the distinct ones).

The product of its digits is 6223392, while the sum is 54.

The spelling of 16378777233 in words is "sixteen billion, three hundred seventy-eight million, seven hundred seventy-seven thousand, two hundred thirty-three".