16701868520 has 16 divisors (see below), whose sum is σ = 37579204260. Its totient is φ = 6680747392.

The previous prime is 16701868517. The next prime is 16701868541. The reversal of 16701868520 is 2586810761.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15167892964 + 1533975556 = 123158^2 + 39166^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208773317 + ... + 208773396.

Almost surely, 2^16701868520 is an apocalyptic number.

16701868520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16701868520 is an abundant number, since it is smaller than the sum of its proper divisors (20877335740).

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

16701868520 is a wasteful number, since it uses less digits than its factorization.

16701868520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417546724 (or 417546720 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 16701868520 in words is "sixteen billion, seven hundred one million, eight hundred sixty-eight thousand, five hundred twenty".