16943878890 has 80 divisors (see below), whose sum is σ = 46184481288. Its totient is φ = 4456456704.

The previous prime is 16943878873. The next prime is 16943878891. The reversal of 16943878890 is 9887834961.

16943878890 is a `hidden beast` number, since 1 + 6 + 94 + 387 + 88 + 90 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11284175529 + 5659703361 = 106227^2 + 75231^2 .

It is not an unprimeable number, because it can be changed into a prime (16943878891) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 84147 + ... + 202406.

Almost surely, 2^16943878890 is an apocalyptic number.

16943878890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16943878890 is an abundant number, since it is smaller than the sum of its proper divisors (29240602398).

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

16943878890 is a wasteful number, since it uses less digits than its factorization.

16943878890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286645 (or 286636 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 16943878890 in words is "sixteen billion, nine hundred forty-three million, eight hundred seventy-eight thousand, eight hundred ninety".