16863609764 has 6 divisors (see below), whose sum is σ = 29511317094. Its totient is φ = 8431804880.

The previous prime is 16863609727. The next prime is 16863609779. The reversal of 16863609764 is 46790636861.

16863609764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15999720100 + 863889664 = 126490^2 + 29392^2 .

It is a super-2 number, since 2×16863609764² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2107951217 + ... + 2107951224.

It is an arithmetic number, because the mean of its divisors is an integer number (4918552849).

Almost surely, 2^16863609764 is an apocalyptic number.

It is an amenable number.

16863609764 is a deficient number, since it is larger than the sum of its proper divisors (12647707330).

16863609764 is a wasteful number, since it uses less digits than its factorization.

16863609764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215902445 (or 4215902443 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 16863609764 in words is "sixteen billion, eight hundred sixty-three million, six hundred nine thousand, seven hundred sixty-four".