16859247880 has 32 divisors (see below), whose sum is σ = 37955352600. Its totient is φ = 6739780096.

The previous prime is 16859247869. The next prime is 16859247887. The reversal of 16859247880 is 8874295861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11186446756 + 5672801124 = 105766^2 + 75318^2 .

It is not an unprimeable number, because it can be changed into a prime (16859247887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52285 + ... + 190924.

Almost surely, 2^16859247880 is an apocalyptic number.

16859247880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16859247880 is an abundant number, since it is smaller than the sum of its proper divisors (21096104720).

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

16859247880 is a wasteful number, since it uses less digits than its factorization.

16859247880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244953 (or 244949 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 16859247880 in words is "sixteen billion, eight hundred fifty-nine million, two hundred forty-seven thousand, eight hundred eighty".