16851668370 has 32 divisors (see below), whose sum is σ = 42823064448. Its totient is φ = 4229438208.

The previous prime is 16851668321. The next prime is 16851668411. The reversal of 16851668370 is 7386615861.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 16520734 + ... + 16521753.

It is an arithmetic number, because the mean of its divisors is an integer number (1338220764).

Almost surely, 2^16851668370 is an apocalyptic number.

16851668370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16851668370 is an abundant number, since it is smaller than the sum of its proper divisors (25971396078).

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

16851668370 is a wasteful number, since it uses less digits than its factorization.

16851668370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33042514.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 16851668370 in words is "sixteen billion, eight hundred fifty-one million, six hundred sixty-eight thousand, three hundred seventy".