16859464336 has 135 divisors (see below), whose sum is σ = 39051122313. Its totient is φ = 7042738560.

The previous prime is 16859464277. The next prime is 16859464337. The reversal of 16859464336 is 63346495861.

It is a happy number.

The square root of 16859464336 is 129844.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2494003600 + 14365460736 = 49940^2 + 119856^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16859464337) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 74270655 + ... + 74270881.

Almost surely, 2^16859464336 is an apocalyptic number.

16859464336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16859464336 is the 129844-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16859464336

16859464336 is an abundant number, since it is smaller than the sum of its proper divisors (22191657977).

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

16859464336 is a wasteful number, since it uses less digits than its factorization.

16859464336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 253 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 55.

The spelling of 16859464336 in words is "sixteen billion, eight hundred fifty-nine million, four hundred sixty-four thousand, three hundred thirty-six".