121927680006 has 64 divisors (see below), whose sum is σ = 274169871360. Its totient is φ = 35828785440.

The previous prime is 121927679989. The next prime is 121927680059. The reversal of 121927680006 is 600086729121.

It is a self number, because there is not a number n which added to its sum of digits gives 121927680006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239941 + ... + 549023.

It is an arithmetic number, because the mean of its divisors is an integer number (4283904240).

Almost surely, 2^121927680006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121927680006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137084935680).

121927680006 is an abundant number, since it is smaller than the sum of its proper divisors (152242191354).

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

121927680006 is a wasteful number, since it uses less digits than its factorization.

121927680006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309281.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 121927680006 in words is "one hundred twenty-one billion, nine hundred twenty-seven million, six hundred eighty thousand, six".