16685020370 has 32 divisors (see below), whose sum is σ = 31100986800. Its totient is φ = 6437165056.

The previous prime is 16685020357. The next prime is 16685020381. The reversal of 16685020370 is 7302058661.

It can be written as a sum of positive squares in 8 ways, for example, as 9294695281 + 7390325089 = 96409^2 + 85967^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253886 + ... + 312774.

Almost surely, 2^16685020370 is an apocalyptic number.

16685020370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16685020370 is a deficient number, since it is larger than the sum of its proper divisors (14415966430).

16685020370 is a wasteful number, since it uses less digits than its factorization.

16685020370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59902.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 16685020370 in words is "sixteen billion, six hundred eighty-five million, twenty thousand, three hundred seventy".