121761323660 has 48 divisors (see below), whose sum is σ = 260264309760. Its totient is φ = 47842502400.

The previous prime is 121761323659. The next prime is 121761323681. The reversal of 121761323660 is 66323167121.

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 15 ways as a sum of consecutive naturals, for example, 19226 + ... + 493854.

It is an arithmetic number, because the mean of its divisors is an integer number (5422173120).

Almost surely, 2^121761323660 is an apocalyptic number.

121761323660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121761323660 is an abundant number, since it is smaller than the sum of its proper divisors (138502986100).

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

121761323660 is a wasteful number, since it uses less digits than its factorization.

121761323660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474866 (or 474864 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 121761323660 in words is "one hundred twenty-one billion, seven hundred sixty-one million, three hundred twenty-three thousand, six hundred sixty".