121636318360398 has 8 divisors (see below), whose sum is σ = 243272636720808. Its totient is φ = 40545439453464.

The previous prime is 121636318360223. The next prime is 121636318360423. The reversal of 121636318360398 is 893063813636121.

It is a sphenic number, since it is the product of 3 distinct primes.

121636318360398 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10136359863361 + ... + 10136359863372.

It is an arithmetic number, because the mean of its divisors is an integer number (30409079590101).

Almost surely, 2^{121636318360398} is an apocalyptic number.

121636318360398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121636318360398 is a wasteful number, since it uses less digits than its factorization.

121636318360398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20272719726738.

The product of its (nonzero) digits is 20155392, while the sum is 60.

The spelling of 121636318360398 in words is "one hundred twenty-one trillion, six hundred thirty-six billion, three hundred eighteen million, three hundred sixty thousand, three hundred ninety-eight".