16663356252 has 36 divisors (see below), whose sum is σ = 42507705240. Its totient is φ = 5503492512.

The previous prime is 16663356221. The next prime is 16663356271. The reversal of 16663356252 is 25265336661.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 16663356198 and 16663356207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2119338 + ... + 2127185.

It is an arithmetic number, because the mean of its divisors is an integer number (1180769590).

Almost surely, 2^16663356252 is an apocalyptic number.

16663356252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16663356252 is an abundant number, since it is smaller than the sum of its proper divisors (25844348988).

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

16663356252 is a wasteful number, since it uses less digits than its factorization.

16663356252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246642 (or 4246637 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The spelling of 16663356252 in words is "sixteen billion, six hundred sixty-three million, three hundred fifty-six thousand, two hundred fifty-two".