16802899876 has 81 divisors (see below), whose sum is σ = 35127480801. Its totient is φ = 7012248096.

The previous prime is 16802899777. The next prime is 16802899901. The reversal of 16802899876 is 67899820861.

The square root of 16802899876 is 129626.

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., 16463456100 + 339443776 = 128310^2 + 18424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 85293810 + ... + 85294006.

Almost surely, 2^16802899876 is an apocalyptic number.

16802899876 is the 129626-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16802899876

16802899876 is an abundant number, since it is smaller than the sum of its proper divisors (18324580925).

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

16802899876 is an equidigital number, since it uses as much as digits as its factorization.

16802899876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 64.

Multiplying 16802899876 by its sum of digits (64), we get a square (1075385592064 = 1037008²).

The spelling of 16802899876 in words is "sixteen billion, eight hundred two million, eight hundred ninety-nine thousand, eight hundred seventy-six".