121634804416 has 28 divisors (see below), whose sum is σ = 241389273888. Its totient is φ = 60812310272.

The previous prime is 121634804399. The next prime is 121634804419. The reversal of 121634804416 is 614408436121.

It is not an unprimeable number, because it can be changed into a prime (121634804419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759390 + ... + 905506.

It is an arithmetic number, because the mean of its divisors is an integer number (8621045496).

Almost surely, 2^121634804416 is an apocalyptic number.

121634804416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121634804416 is a deficient number, since it is larger than the sum of its proper divisors (119754469472).

121634804416 is a wasteful number, since it uses less digits than its factorization.

121634804416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159136 (or 159126 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 121634804416 in words is "one hundred twenty-one billion, six hundred thirty-four million, eight hundred four thousand, four hundred sixteen".