121636463 has 8 divisors (see below), whose sum is σ = 134188656. Its totient is φ = 109540800.

The previous prime is 121636447. The next prime is 121636481. The reversal of 121636463 is 364636121.

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

It is a cyclic number.

It is not a de Polignac number, because 121636463 - 2⁴ = 121636447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121636763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113573 + ... + 114638.

It is an arithmetic number, because the mean of its divisors is an integer number (16773582).

Almost surely, 2^121636463 is an apocalyptic number.

121636463 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121636463 is a deficient number, since it is larger than the sum of its proper divisors (12552193).

121636463 is a wasteful number, since it uses less digits than its factorization.

121636463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228265.

The product of its digits is 15552, while the sum is 32.

The square root of 121636463 is about 11028.8921927816. The cubic root of 121636463 is about 495.4744463092.

The spelling of 121636463 in words is "one hundred twenty-one million, six hundred thirty-six thousand, four hundred sixty-three".