16304677861 has 6 divisors (see below), whose sum is σ = 16572981362. Its totient is φ = 16036407120.

The previous prime is 16304677813. The next prime is 16304677877. The reversal of 16304677861 is 16877640361.

It can be written as a sum of positive squares in 3 ways, for example, as 1267787236 + 15036890625 = 35606^2 + 122625^2 .

It is not a de Polignac number, because 16304677861 - 2¹³ = 16304669669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16304677811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 989115 + ... + 1005463.

Almost surely, 2^16304677861 is an apocalyptic number.

It is an amenable number.

16304677861 is a deficient number, since it is larger than the sum of its proper divisors (268303501).

16304677861 is an frugal number, since it uses more digits than its factorization.

16304677861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32759 (or 16410 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 16304677861 in words is "sixteen billion, three hundred four million, six hundred seventy-seven thousand, eight hundred sixty-one".