121606952544 has 144 divisors (see below), whose sum is σ = 431152001280. Its totient is φ = 31586215680.

The previous prime is 121606952521. The next prime is 121606952557. The reversal of 121606952544 is 445259606121.

121606952544 is a `hidden beast` number, since 1 + 2 + 1 + 60 + 69 + 525 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 121606952544.

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, 2719684 + ... + 2764035.

It is an arithmetic number, because the mean of its divisors is an integer number (2994111120).

Almost surely, 2^121606952544 is an apocalyptic number.

121606952544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121606952544 is an abundant number, since it is smaller than the sum of its proper divisors (309545048736).

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

121606952544 is a wasteful number, since it uses less digits than its factorization.

121606952544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5483753 (or 5483742 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 121606952544 in words is "one hundred twenty-one billion, six hundred six million, nine hundred fifty-two thousand, five hundred forty-four".