16851861026610 has 128 divisors (see below), whose sum is σ = 42724104238080. Its totient is φ = 4247886779136.

The previous prime is 16851861026593. The next prime is 16851861026621. The reversal of 16851861026610 is 1662016815861.

16851861026610 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8614449 + ... + 10388091.

It is an arithmetic number, because the mean of its divisors is an integer number (333782064360).

Almost surely, 2^{16851861026610} is an apocalyptic number.

16851861026610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16851861026610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21362052119040).

16851861026610 is an abundant number, since it is smaller than the sum of its proper divisors (25872243211470).

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

16851861026610 is a wasteful number, since it uses less digits than its factorization.

16851861026610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773912.

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 16851861026610 in words is "sixteen trillion, eight hundred fifty-one billion, eight hundred sixty-one million, twenty-six thousand, six hundred ten".