16802742281 has 8 divisors (see below), whose sum is σ = 18096545544. Its totient is φ = 15509122560.

The previous prime is 16802742263. The next prime is 16802742293. The reversal of 16802742281 is 18224720861.

It can be written as a sum of positive squares in 4 ways, for example, as 135932281 + 16666810000 = 11659^2 + 129100^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16802742281 is a prime.

It is a super-2 number, since 2×16802742281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16802742881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188711 + ... + 263091.

It is an arithmetic number, because the mean of its divisors is an integer number (2262068193).

Almost surely, 2^16802742281 is an apocalyptic number.

It is an amenable number.

16802742281 is a deficient number, since it is larger than the sum of its proper divisors (1293803263).

16802742281 is a wasteful number, since it uses less digits than its factorization.

16802742281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91771.

The product of its (nonzero) digits is 86016, while the sum is 41.

The spelling of 16802742281 in words is "sixteen billion, eight hundred two million, seven hundred forty-two thousand, two hundred eighty-one".