121769617368 has 96 divisors (see below), whose sum is σ = 356104900800. Its totient is φ = 34596894528.

The previous prime is 121769617337. The next prime is 121769617379. The reversal of 121769617368 is 863716967121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78730 + ... + 499737.

It is an arithmetic number, because the mean of its divisors is an integer number (3709426050).

Almost surely, 2^121769617368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121769617368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178052450400).

121769617368 is an abundant number, since it is smaller than the sum of its proper divisors (234335283432).

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

121769617368 is a wasteful number, since it uses less digits than its factorization.

121769617368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578669 (or 578658 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The spelling of 121769617368 in words is "one hundred twenty-one billion, seven hundred sixty-nine million, six hundred seventeen thousand, three hundred sixty-eight".