121560984736 has 24 divisors (see below), whose sum is σ = 239332896180. Its totient is φ = 60778027008.

The previous prime is 121560984719. The next prime is 121560984767. The reversal of 121560984736 is 637489065121.

It can be written as a sum of positive squares in 2 ways, for example, as 117953781136 + 3607203600 = 343444^2 + 60060^2 .

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924510 + ... + 1047778.

It is a 1-persistent number, because it is pandigital, but 2⋅121560984736 = 243121969472 is not.

Almost surely, 2^121560984736 is an apocalyptic number.

121560984736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121560984736 is a deficient number, since it is larger than the sum of its proper divisors (117771911444).

121560984736 is a wasteful number, since it uses less digits than its factorization.

121560984736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154096 (or 154088 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 121560984736 in words is "one hundred twenty-one billion, five hundred sixty million, nine hundred eighty-four thousand, seven hundred thirty-six".