201630436236 has 36 divisors (see below), whose sum is σ = 510516656832. Its totient is φ = 67099413024.

The previous prime is 201630436201. The next prime is 201630436277. The reversal of 201630436236 is 632634036102.

201630436236 is a `hidden beast` number, since 20 + 1 + 6 + 3 + 0 + 4 + 3 + 623 + 6 = 666.

201630436236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 201630436236.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4591695 + ... + 4635398.

Almost surely, 2^201630436236 is an apocalyptic number.

It is an amenable number.

201630436236 is an abundant number, since it is smaller than the sum of its proper divisors (308886220596).

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

201630436236 is a wasteful number, since it uses less digits than its factorization.

201630436236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227710 (or 9227705 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 201630436236 in words is "two hundred one billion, six hundred thirty million, four hundred thirty-six thousand, two hundred thirty-six".