121988650474908 has 72 divisors (see below), whose sum is σ = 352455079328352. Its totient is φ = 34849605612672.

The previous prime is 121988650474877. The next prime is 121988650474909. The reversal of 121988650474908 is 809474056889121.

121988650474908 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 8 + 8 + 65 + 0 + 474 + 90 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121988650474909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27773535 + ... + 31864502.

It is an arithmetic number, because the mean of its divisors is an integer number (4895209435116).

Almost surely, 2^{121988650474908} is an apocalyptic number.

121988650474908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121988650474908 is an abundant number, since it is smaller than the sum of its proper divisors (230466428853444).

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

121988650474908 is a wasteful number, since it uses less digits than its factorization.

121988650474908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59646171 (or 59646166 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 72.

The spelling of 121988650474908 in words is "one hundred twenty-one trillion, nine hundred eighty-eight billion, six hundred fifty million, four hundred seventy-four thousand, nine hundred eight".