163635653052256 has 192 divisors, whose sum is σ = 423572246576640. Its totient is φ = 60287016960000.

The previous prime is 163635653052233. The next prime is 163635653052281. The reversal of 163635653052256 is 652250356536361.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 163635653052256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22097056 + ... + 28557856.

It is an arithmetic number, because the mean of its divisors is an integer number (2206105450920).

Almost surely, 2^{163635653052256} is an apocalyptic number.

163635653052256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163635653052256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211786123288320).

163635653052256 is an abundant number, since it is smaller than the sum of its proper divisors (259936593524384).

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

163635653052256 is a wasteful number, since it uses less digits than its factorization.

163635653052256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461389 (or 6461381 counting only the distinct ones).

The product of its (nonzero) digits is 87480000, while the sum is 58.

The spelling of 163635653052256 in words is "one hundred sixty-three trillion, six hundred thirty-five billion, six hundred fifty-three million, fifty-two thousand, two hundred fifty-six".