16553998964 has 12 divisors (see below), whose sum is σ = 28976037888. Its totient is φ = 8275131000.

The previous prime is 16553998963. The next prime is 16553998969. The reversal of 16553998964 is 46989935561.

It is a super-2 number, since 2×16553998964² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16553998964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16553998963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447092 + ... + 482699.

It is an arithmetic number, because the mean of its divisors is an integer number (2414669824).

Almost surely, 2^16553998964 is an apocalyptic number.

It is an amenable number.

16553998964 is a deficient number, since it is larger than the sum of its proper divisors (12422038924).

16553998964 is a wasteful number, since it uses less digits than its factorization.

16553998964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934246 (or 934244 counting only the distinct ones).

The product of its digits is 62985600, while the sum is 65.

The spelling of 16553998964 in words is "sixteen billion, five hundred fifty-three million, nine hundred ninety-eight thousand, nine hundred sixty-four".