121688653364 has 24 divisors (see below), whose sum is σ = 213240552000. Its totient is φ = 60762830400.

The previous prime is 121688653349. The next prime is 121688653367. The reversal of 121688653364 is 463356886121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121688653367) 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, 16994417 + ... + 17001575.

It is an arithmetic number, because the mean of its divisors is an integer number (8885023000).

Almost surely, 2^121688653364 is an apocalyptic number.

It is an amenable number.

121688653364 is a deficient number, since it is larger than the sum of its proper divisors (91551898636).

121688653364 is a wasteful number, since it uses less digits than its factorization.

121688653364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263 (or 12261 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 53.

The spelling of 121688653364 in words is "one hundred twenty-one billion, six hundred eighty-eight million, six hundred fifty-three thousand, three hundred sixty-four".