121780964848 has 20 divisors (see below), whose sum is σ = 236455881480. Its totient is φ = 60760092224.

The previous prime is 121780964843. The next prime is 121780964923. The reversal of 121780964848 is 848469087121.

It is a junction number, because it is equal to n+sod(n) for n = 121780964792 and 121780964801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121780964843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8141683 + ... + 8156626.

It is an arithmetic number, because the mean of its divisors is an integer number (11822794074).

Almost surely, 2^121780964848 is an apocalyptic number.

It is an amenable number.

121780964848 is a deficient number, since it is larger than the sum of its proper divisors (114674916632).

121780964848 is a wasteful number, since it uses less digits than its factorization.

121780964848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16298784 (or 16298778 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 121780964848 in words is "one hundred twenty-one billion, seven hundred eighty million, nine hundred sixty-four thousand, eight hundred forty-eight".