121740055680 has 64 divisors (see below), whose sum is σ = 388046433600. Its totient is φ = 32464014336.

The previous prime is 121740055673. The next prime is 121740055711. The reversal of 121740055680 is 86550047121.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31701220 + ... + 31705059.

It is an arithmetic number, because the mean of its divisors is an integer number (6063225525).

Almost surely, 2^121740055680 is an apocalyptic number.

121740055680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121740055680 is an abundant number, since it is smaller than the sum of its proper divisors (266306377920).

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

121740055680 is an equidigital number, since it uses as much as digits as its factorization.

121740055680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63406301 (or 63406289 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 121740055680 in words is "one hundred twenty-one billion, seven hundred forty million, fifty-five thousand, six hundred eighty".