121758742504 has 96 divisors (see below), whose sum is σ = 268781220000. Its totient is φ = 51553756800.

The previous prime is 121758742477. The next prime is 121758742513. The reversal of 121758742504 is 405247857121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19753327 + ... + 19759489.

It is an arithmetic number, because the mean of its divisors is an integer number (2799804375).

Almost surely, 2^121758742504 is an apocalyptic number.

121758742504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121758742504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134390610000).

121758742504 is an abundant number, since it is smaller than the sum of its proper divisors (147022477496).

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

121758742504 is a wasteful number, since it uses less digits than its factorization.

121758742504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6783 (or 6772 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 46.

The spelling of 121758742504 in words is "one hundred twenty-one billion, seven hundred fifty-eight million, seven hundred forty-two thousand, five hundred four".