201563983656000 has 448 divisors, whose sum is σ = 845160989237760. Its totient is φ = 46071767347200.

The previous prime is 201563983655999. The next prime is 201563983656001. The reversal of 201563983656000 is 656389365102.

It is a happy number.

201563983656000 is a `hidden beast` number, since 2 + 0 + 15 + 6 + 39 + 8 + 36 + 560 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (201563983655999) and next prime (201563983656001).

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (201563983656001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65142757 + ... + 68166756.

Almost surely, 2^{201563983656000} is an apocalyptic number.

201563983656000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201563983656000 is an abundant number, since it is smaller than the sum of its proper divisors (643597005581760).

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

201563983656000 is a wasteful number, since it uses less digits than its factorization.

201563983656000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133309556 (or 133309530 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 201563983656000 in words is "two hundred one trillion, five hundred sixty-three billion, nine hundred eighty-three million, six hundred fifty-six thousand".