163604636621212 has 24 divisors (see below), whose sum is σ = 288068603323536. Its totient is φ = 81299335315968.

The previous prime is 163604636621191. The next prime is 163604636621221. The reversal of 163604636621212 is 212126636406361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46291308 + ... + 49700044.

It is an arithmetic number, because the mean of its divisors is an integer number (12002858471814).

Almost surely, 2^{163604636621212} is an apocalyptic number.

It is an amenable number.

163604636621212 is a deficient number, since it is larger than the sum of its proper divisors (124463966702324).

163604636621212 is a wasteful number, since it uses less digits than its factorization.

163604636621212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482517 (or 3482515 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 163604636621212 in words is "one hundred sixty-three trillion, six hundred four billion, six hundred thirty-six million, six hundred twenty-one thousand, two hundred twelve".