16761768318 has 16 divisors (see below), whose sum is σ = 37248374160. Its totient is φ = 5587256088.

The previous prime is 16761768299. The next prime is 16761768347. The reversal of 16761768318 is 81386716761.

16761768318 is a `hidden beast` number, since 1 + 6 + 7 + 617 + 6 + 8 + 3 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 310403117 = 16761768318 / (1 + 6 + 7 + 6 + 1 + 7 + 6 + 8 + 3 + 1 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155201505 + ... + 155201612.

It is an arithmetic number, because the mean of its divisors is an integer number (2328023385).

Almost surely, 2^16761768318 is an apocalyptic number.

16761768318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16761768318 is an abundant number, since it is smaller than the sum of its proper divisors (20486605842).

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

16761768318 is a wasteful number, since it uses less digits than its factorization.

16761768318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310403128 (or 310403122 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 16761768318 in words is "sixteen billion, seven hundred sixty-one million, seven hundred sixty-eight thousand, three hundred eighteen".