16802251780 has 12 divisors (see below), whose sum is σ = 35284728780. Its totient is φ = 6720900704.

The previous prime is 16802251777. The next prime is 16802251819. The reversal of 16802251780 is 8715220861.

It can be written as a sum of positive squares in 2 ways, for example, as 11980615936 + 4821635844 = 109456^2 + 69438^2 .

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, 420056275 + ... + 420056314.

It is an arithmetic number, because the mean of its divisors is an integer number (2940394065).

Almost surely, 2^16802251780 is an apocalyptic number.

16802251780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16802251780 is an abundant number, since it is smaller than the sum of its proper divisors (18482477000).

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

16802251780 is a wasteful number, since it uses less digits than its factorization.

16802251780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840112598 (or 840112596 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 16802251780 in words is "sixteen billion, eight hundred two million, two hundred fifty-one thousand, seven hundred eighty".