121668631863 has 8 divisors (see below), whose sum is σ = 162229659888. Its totient is φ = 81110012544.

The previous prime is 121668631853. The next prime is 121668631871. The reversal of 121668631863 is 368136866121.

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

It is not a de Polignac number, because 121668631863 - 2⁹ = 121668631351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121668631813) 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, 480820 + ... + 688857.

It is an arithmetic number, because the mean of its divisors is an integer number (20278707486).

Almost surely, 2^121668631863 is an apocalyptic number.

121668631863 is a deficient number, since it is larger than the sum of its proper divisors (40561028025).

121668631863 is a wasteful number, since it uses less digits than its factorization.

121668631863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204353.

The product of its digits is 1492992, while the sum is 51.

The spelling of 121668631863 in words is "one hundred twenty-one billion, six hundred sixty-eight million, six hundred thirty-one thousand, eight hundred sixty-three".